High mileage oil swells seals. It doesn't leak and it doesn't consume oil.
High mileage oil swells seals. Mar 13, 2005 · A HM oil might help. direct injection is HARD on oil, as it adds contaminants beside fuel + those that "believe" the oil Mar 7, 2016 · I use the Pennzoil High Mileage for my 2nd gen 4cyl with 213K on itJust did a change yesterday. If you go back to regular oil the seals can shrink back and possibly cause new/more leaks. Can You Mix Different Brands of Oil with the Same Weight Feb 18, 2019 · As noted above, High Mileage oil has additives that swell the seals to stop leaks. On the first signs of leaking I intend to go to M1 High Mileage or EP High Mileage. Jul 10, 2024 · Stops Leaks: The special additives in high-mileage oil cause seals and gaskets to swell, reducing oil leaks. I've considered switching to a high mileage oil since it has additives to "recondition" and "swell" the all seals. In some cases, older valve-guide seals in engines may have reduced seepage. For example, valve seals prevent oil from entering the cylinder during the intake stroke. No, high mileage oil does not swell seals. Mar 31, 2016 · If you need to use a seal swell product to seal a leak, and it seals the leak, how is that shortening the life, unless you planned on adding fluid and not using the seal swell, then yes it may shorten the life as you may experience a massive blowout of the seal vs constantly adding fluid. It's It's possible that after an oil change or two, the leaking co ul d stop. I've seen stem seals break like glass, ripped, and valve stems totally missing the seals. The additives in high mileage oil are designed to condition and protect seals , not damage them. Using too thick an oil to stop a consumption issue from bad stem seals in an otherwise good engine might cause other problems over time. The ingredients of these oils are specially formulated to care for the changing needs of older engines, which include things like conditioners, seal swells, antioxidants, and friction additives, to name a few. Find the leak and fix it. 160k miles, running well, not using any oil. However, once you stop using the "high mileage" oil, all those seals will no longer be getting their softening additives and dry back up, now with additional wear. If your issue with high mileage is oil burning or smoking, it won't help with that. , a solvent) to the oil to make the seals and gaskets swell - use oil so thick it runs out the leaks slower - clean whatever is allowing oil to seep around a seal out with something (e. " Jul 24, 2019 · I have 306000 miles on my 7th gen V6, I have NEVER used high mileage oil Same old grade synthetic Mobil1 for the last 12 years. I have used both rear main seal repairs from Bar's and No Leak. Nov 2, 2023 · One downside of Mobil 1 high mileage oil is its potential to cause oil leaks in older vehicles. Apr 14, 2016 · The oil leaks continued for the first oil change and the second oil change but now 15,000 miles later on my third high mileage oil change the leaks seem to have slowed to undetectable levels. Has a few small oil leaks, nothing catastrophic. Higher mileage oil typically has more detergents in it as well as additives to help with old seals. Never any seepage before. High-mileage oil can help maintain and enhance engine performance. , Auto-Rx) The first usually causes seals to fail eventually. Its additives and seal enhancers can rejuvenate worn-out seals, preventing leaks and reducing oil consumption. Jan 5, 2019 · Seal conditioners are probably a gimmick. High mileage oil can reduce oil burning in older engines. Oct 22, 2022 · On November 17, 2015, I joined 1,942 other members. I would recommend not using High Mileage oil as a preventative measure, as I did. Have a 1986 MB 560SL that was sitting for about 20 years. The idea is the seal swelling agents in conventional oil keep under slight tension on whatever part they are sealing. High mileage oils have a seal swelling agent that swells the seals greater than conventional oil. If the seal has just shrunk, the seal swell additives in Mobil1 High Mileage can actually help re-swell the seal and help to reduce or stop the leaking seal. Aug 29, 2022 · This swelling allows the seal material to fill any gaps caused by worn material and prevent premature leakage. Also, swelling a bad seal is only a temporary fix -- in a short time, it will go bad again and no sweller will fix it. 5 quarts out, put 6 in. High mileage oil has additive to swell seals when various rubber seals get old and cause leaks. Are there any recommended conditioner Dec 22, 2017 · For example, Valvoline Maxlife Full Synthetic is dexos1 qualified, meaning they test that High Mileage oil against about 10 different seal materials to make sure it doesn't swell or shrink the seals much. No visible leaks so I assume it has to be going out the exhaust a bit at a time by leaking past the valve stem seals. Apr 13, 2013 · Right now my local store has the high mileage oils (3000 N MLK BLVD Muncie, 47303) for 2. For the average driver, anything over 100,000 miles could safely be considered a high mileage vehicle. I previously had 3 dime sized spots and 1 half dollar spot. im not really asking which brand or weight oil to use, more concerned about the turbo, ultrafanUK mentioned the concerns, a turbo has an oil seal around a shaft that spins very high rpms, im not sure if a HM oil will be good for that if it swells the seal. They do contain seal swellers but companies prefer to use conditioner because people freak out at visions of their seals being swollen up like an elephants trunk. Oct 2, 2005 · The main benefit of high mileage are the following swelling of seals to decrease oil leaks, and also more cleaning power. The high-mileage oil is designed to rejuvenate seals and gaskets, which can lead to increased swelling and potential leakage. It helps older vehicles run better for longer. Engine has 186k miles. A car that I own leaks or burns oil, not sure which yet, and I have used Valvoline Synpower in my last oil changed. Viton (flouropolymer), polyacrylate, silicone, or maybe nylon are used for valve stem seals. Change interval was 7,600 miles this time Nov 22, 2020 · Went from a drop on the ground maybe once a week to several drops a day on the ground using the Pennzoil, so it appears the short OCI and high grade oil flushed something away from the seals that were already capable of leaking when not coated in gunk. Apr 20, 2018 · There are additives in High Mileage oil that swell seals and help stop existing leaks. May 21, 2018 · The "High Mileage" part means it has additives that reduce oil leaks by swelling seals and gaskets. Went through the entire 12-pack case. 1. Currently changed the oil with Mobil Oct 3, 2006 · I hate to even ask this. Making a seal swell further than it was designed to compromises its integrity. The latter is not important, any SN rated should be fine. High mileage oil does not swell seals. If your engine is not using any oil in-between oil changes (or only very little), then do not switch to a High Mileage oil. 59 right now, it looks like they have free shipping without a minimum too, so if the OP wants to order some right now just find the Muncie, Indiana store and select it when he goes to order unless someone knows a cheaper store. 99 the national price at most stores seems to be $3. #13 orenji , Mar 3, 2019 Aug 25, 2005 · Hi all, quick commercial break: My EJ20 was beginning to leak past some of the rubber seals, in particular the spark plug o-rings. My car has 140,000 miles on a Chevy V6. Feb 21, 2012 · I suggest you use Mobil 1 High Mileage or Valvoline Synpower. (It's thicker) 2. Get a UV dye kit from amazon. High mileage oil tends to have additives that soften and swell soft seals. When you have a leaking seal, the only real fix is to replace it. We’ve observed that Mobil 1 High Mileage Full Synthetic Motor Oil and Castrol EDGE High Mileage, for example, include conditioners that rejuvenate seals, preventing leaks—a prevalent issue in engines with many miles on the clock. High-mileage oil offers many benefits for older vehicles. Jan 17, 2008 · - add something (e. Oct 4, 2024 · High mileage oils are fortified with unique additives that assist in protecting an older engine. Seal conditioners are added to lubricants to help keep seal materials supple and prevent them from becoming brittle and causing leaks. As seals age, they become less elastic and can shrink dimensionally. They both plugged the leak, but I have to use it at every oil change. They go on to say that in areas that engine manufactures use silicone based sealants rather than gaskets, high mileage oil additives will break that sealant down over time too and cause additional leaks. They help to maintain the seals’ flexibility and prevent them from becoming brittle or cracked. High mileage oils contain a very small amount of ester which attempts to swell things like valve seals to keep them tight. Aug 13, 2024 · Switching to high-mileage oil can make a big difference. Mar 2, 2019 · High Mileage oil has additatives that swell the the seals and in doing so, degrade the seals overtime. High Mileage Oil. Or so I've heard Oct 4, 2024 · Does High Mileage Oil Swell Seals. There are API and ACEA upper and lower limits on seal shrinking, swelling, hardening, and softening. Keeps the Engine Clean: High-mileage oil contains detergents that clean away sludge and deposits from the engine. In fact, high mileage oil contains additives that can help condition and rejuvenate seals, reducing common issues like leaks and oil consumption in older engines. Jan 10, 2017 · I recently wrote to Mobil 1 and asked the following question: "Concerning the seal conditioning agents found in High Mileage oil, do they also swell the seals and gaskets or is its purpose only to provide special conditioning to the gaskets and seals. Oil pan gaskets are silicone usually. I can’t remember all the chemicals names thats are high mileage oils but they allegedly help with seals and keeping the engines a little cleaner… that being said i will never use high mileage oils BECAUSE the oil makes the seals swell and more prone to fail and leak/blow out. Reduces Oil Consumption: It helps to use less oil by minimizing leaks and burning. Mar 29, 2011 · I have a 2006 Honda Odyssey with 125,000 miles and a leak in the rear main seal. Well, they were out for my last oil change so I put in regular dino. The additional seal swell agents can in theory can shorten the life of an oil seal. Personally I wouldn't worry about it. My catch can is collecting about 2oz a month as well. Sep 18, 2020 · As a short-term solution, using an oil leak stop additive in combination with a heavier weight oil, synthetic oil, or high mileage oil is a good way of slowing down or stopping engine oil leaks. I also understand from reading and oil maker websites that HM oil also has a little stronger additive package to help older engines stay cleaner and fight blow by etc. Now, that got me thinking about using the HM oil as a seal conditioner on cars with relatively small mileage, say 40k, or from brand new. Aug 8, 2023 · Some people might consider switching to a high mileage oil at 200,000 miles, while others may want to change to a high mileage oil at 80,000 miles. The only fix for leaky seals is to have them replaced. Nov 5, 2022 · But high mileage oils tend to include seal conditioners that are meant to cause seal surfaces in contact with the oil to soften and swell (all very, very subtly) to prevent leaks and extend their functional lives. (Auto-Rx) then swell Oct 31, 2016 · thanks for the suggestions. If you have leaking seals, its better to condition them (Auto-Rx) then swell them (high mileage oil). " The reply from Mobil 1: "The function of Dec 23, 2006 · Some people suggested that in some areas the seals can still get brittle and suggested the HM oil, but this is after the fact and if the HM oil does not help, you have to change the seal. The problem is they swell/soften all seals in the engine (depending on material type) not just the leaker. Oct 11, 2023 · High mileage oils contain seal conditioners and additives that cause o-rings, gaskets and seals to swell. I concur with what is said above, any of the top brand full synthetics will be fine. However, it’s not a guaranteed fix for all engines. Jun 9, 2019 · Seals are usually silicone rubber these days, about widespread post-2002 or so, meaning any extra seal conditioners (high mileage oil's main thing) wouldn't have any effect. Regularly I had to top it off with the stuff, Valvoline Racing 20w-50, I had bought in 1998. Because of the thicker oil Apr 25, 2020 · Lucas Heavy Duty Oil Stabilizer will get rid of your leaks along with your engine Seriously though, I recommended you use some high mileage oil but if you can't replace the leaking seals, try Castrol EDGE 0W-40. May 5, 2020 · They contend that high mileage oils contain seal swellers that will actually damage many seals over time by softening them too much, etc. I have no particular preference if it is conventional or synthetic. High mileage oils have more chemicals in them. But I have an Acura RDX turbo which has a oil weeping problem at the oil filter housing rubber seals where the filter holding housing mounts to the block as a separate part. Apparently the Hi Mileage oil contains extra seal conditioners to prevent leaks. Mar 28, 2018 · I've been trying to avoid high mileage oils on my Chev 6. Got about 5. Apr 4, 2012 · Afton Chemical Seal Swell Additives for adjusting seal swell in finished products. Oct 19, 2023 · I would not think you need high mileage oil at 75k miles. These oils are supposed to have additives that help engines that have run more than 75,000 miles to stay in good shape. Jun 29, 2012 · Mobil-1's high mileage syn oil has 1100ppm Zinc/1000ppm phos which is likely ok for a stock 283 sbc but is marginal at best even for a very mild hi perf ft cam and other additives that swells seals that could possibly cause issues like already stated esp if you motor doesnt need it . Not enough to drip yet but a large area none the less. For example there are no 0W-XX high VI HM oils consiquently if you're using an oil like M1 0W-40 you'll be taking a hit to your cold starting performance and engine lubrication efficiency generally. Fast forward 3 weeks and I noticed oil seeping out all around the pan seal. May 7, 2007 · Valvoline Synthetic Maxlife according to the site has slight increase in viscosity, antiwear ingredients, seal conditioner etc. Especially during the winter months Dec 19, 2017 · Been using high mileage castrol for the last 35k miles. Apr 16, 2017 · I'm losing about a quart of oil a month. The seal swelling is good if you have oil usage, if you dont or its minior i'd just buy semi synth or full synth and be done with it. Most oil stop leak additives cause the rubber seals inside the engine, such as the rear and front main seal, to swell. You cant fix mechanical problems with chemicals. Got it running again, in great shape. Does that make any Apr 30, 2017 · What are my alternatives for a High Mileage and High Zinc motor oil? I want the high mileage to swell the seals and the high zinc for the flat tappets. I also substituted 8 oz of oil for an 8 oz bottle of ATP 205 re-Seal. But it's not going to happen. At an oil change I decided to try Mobil1 Hi Mileage 0W-40 instead of my usual 5W-50. It seems like I can have one but not both. Jul 22, 2010 · High mileage oils contain seal swell agents. g. If a seal is non-elastomeric then seal swell agents aren't going to do much. I'm thinking maybe it didn't really need High Mileage oil and this could have caused leak issues with the valve seals, allowing oil into the cylinder? Considering adding some Lucas oil treatment, but not too sure yet. Most, but not all high mileage cars have some oil consumption and the High Mileage oils have a higher VI rating to help stop this. If the seal is damaged or worn, then it will continue to leak and will get worse with time. Silicone seals don't need it. Seal swell agents reverse this trend, making the seal more elastic (lower durometer) and causing them to expand dimensionally. The best thing to do is replace them if a HM oil doesn't work. I believe seal conditioning is the proper term and ideally that involves cleaning off the seals and restoring their original pliability. High mileage oil is for neoprene seals to keep them soft and pliable. High mileage oil is specifically for use in cars that have 75,000 miles or more. Aug 2, 2004 · It seems like a knee-jerk response of the anti-high mileage oil crowd to say they use seal sweller and will ultimately cause leaks. What would have happened is that after using High Mileage oil in a newer engine for an oil change or two, when the engine was switched back to non Some people might consider switching to a high mileage oil at 200,000 miles, while others may want to change to a high mileage oil at 80,000 miles. I did replace many engine seals but not all, and some are leaking. It doesn't leak and it doesn't consume oil. The only actual fix is to find the leak and replace the seal. Apr 4, 2018 · high mileage oils as noted are said to help with leaking on older vehicles + may be a bit "thicker" within the same spec. Benefits For Older Vehicles. On frequently asked questions they claim that it is a stronger formula compared to Advance formula so you can use it with low mileage engine. Aug 25, 2024 · The short answer is: no. Most High Mileage oils have some ester in them to help condition old seals. Older engines need special care. The "High Mileage" oils cause elastomers to swell more than the Gold Standard to compensate for shrinkage and age. Consider it for your car if it has over 75,000 miles. But the fix is to replace the seals and not use additive in oil to swell seals. Aug 1, 2017 · Now it has blue smoke at start up. After 2 days of driving and leaving the car on cardboard over night, all but one of the oil spots has disappeared. May 1, 2009 · The combo I am running now is Mobil 1 High Mileage 10w40. I was wondering if I would get the same results if I started using a high mileage Nov 18, 2018 · Hello ladies & gents, Long story short. I have no idea but if the high mileage swells the seals, I figure I'll wait as long as I can before I make them swell. . May 11, 2019 · Depends on what your new seals are made of. •Recent interest for use in thin engine oil formulation –Viscosity index –Volatility –Low temperature properties •Currently used in high end and specialty applications –High end performance – full synthetics and racing oils –High mileage oil •Used as a seal swell agent –Improves additive solubility in Group II & III base oils May 31, 2023 · To minimize oil leaks and oil burning (which frequently occurs in older engines), experts recommend using high-mileage oil that causes the o-rings, gaskets, and seals of your engine to enlarge. That's an actual test in SN and many other oil specs too. Jul 31, 2011 · I am not a fan of high mileage oils. 0 with 150,000 miles. Subsequently a small amount of ester (which has the opposite effect of swelling seals) was added to the PAO oils to counteract things. Hoping the seals swell back up. I am 2000 miles into my latest oil change and my oil level has not dropped one bar on the digital readout. Much like the sludge issue mention earlier, this prevents leaks. I run Pennzoil Platinum Full Syn in my 07 Camry V6, adding a few ounces of Schaeffer's Moly EP for a little extra coating on the valves at startup. This can result in lower oil consumption. First oil change was very dark after 1,000 miles. Drained and refilled with the hm. If I could choose, I would rather replace the rubber seals at this oil change. May 31, 2005 · This caused engines to leak oil. Secondly, what you have been doing is working so maybe no need to change. Dec 25, 2018 · Like what was mentioned before - there is a seal conditioner in high mileage oil so it is not swelling them. Rubber seals on high mileage oil may swell, making them more rigid than they should be. Jun 1, 2019 · High mileage oils contain additives and seal enhance rs that reduce leaks (both internal and external). This is because the additives in the high-mileage oil can soften and expand the rubber materials used in older engines. Jan 5, 2021 · Major oil brands that produce high-mileage oil market their products having anti-aging and anti-wear properties for the engine of old cars. Oct 4, 2002 · It is true that the High Mileage oils are good products, but they do have a purpose. High mileage lubricants are meant to benefit high mileage engines, often those with over 75,000 miles on the odometer. Put it in the oil, drive it for a day, jack the car up and use the blacklight. Jun 15, 2011 · But in the Mobil 1 website FAQ it states "With seal leaks it is a little bit of a roll of the dice. Quaker State Defy used to be that oil but the zinc has been reduced to below 1,000ppm. stepping UP a grade to say 5-30 can help as engines wear + the higher viscosity is better for fuel dilution that thins oil. ddf mlzhxfl bsw mpck gwqf mpcuihqw xwatew gzznnlcd lhxg qmrk