Apr 13, 2012 · Amsoil, Shaeffers and T6 are all very capable fluids. But, depending upon individual application of fluid and equipment, there may or may not be a clear "winner" above the others. The …

May 3, 2025 · Similar threads Amsoil Signature Series 0w-20 rstcso Jun 13, 2025 Virgin Oil Analysis - PCMO/HDEO 2 3 Replies 45 Views 4K Jul 31, 2025

Jul 16, 2005 · If I am buying Amsoil, I really don't see the point of buying anything other than their Signature Series. Then again, I live in the US and there are plenty of quality oils available at Walmart …

Mar 28, 2010 · So the Lake Speed Jr. and Repair Geek just posted a video testing 5 different diesel fuel additives against untreated fuel. Interesting results with Cetane and wear scar. If you don't want to …

Jul 19, 2004 · Amsoil doesn't encourage extending OCI without UOAs, or in severe service conditions. They also recommend regular filter intervals and there are qualifications on 100K+ cars. I don't do …

Mar 5, 2003 · Is Amsoil really the best motor oil available for most cars and trucks? Recently people have been posting the results of various tests that have been done. Of course, much of this testing …

Feb 20, 2025 · Contact Amsoil they will give you the correct answer. I use Mobil 1 ATF in everything but the Dodge. Well Amsoil recommends their Multi-Vehicle ATF for ATF+4 applications, and their Fuel …

Apr 22, 2008 · Amsoil IS worth the money for protection and longer intervals b/t oil changes. The one thing that you may not have thought about though is that the 6.0 PSD shears oil more than any other …

Feb 11, 2007 · Amsoil EAO filters tout 99% filtration @20microns, but the test done by Ascent Filtration Labs shows Fram XG 99% @15microns. For the price, I would hope Amsoil is a better quality filter, …

Nov 29, 2015 · After 25k on this Delvac/Synchromesh mix the shifting seemed to be getting harder so I read up again and the "new fix" seemed to be running the Amsoil Manual Transmission/transaxle …