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 …

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 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, …

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 …

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

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 …

Nov 26, 2006 · Amsoil has 2 0W-20's that are API-certified, the 'XL' and 'OE' 0W-20. IF you want to go with Amsoil, maybe choose one of those. I'm not an Amsoil user, but Amsoil fans seem to react …

Aug 24, 2011 · Amsoil "Synthetic Multi-Vehicle Automatic Transmission Fluid" and Mobil 1 Synthetic ATF both claim to be as good or better than Mercon V. Both are around $9 per quart. So my cost will …

Apr 1, 2008 · The Amsoil changed color/darkened very quickly at around 1,000-2,000 miles BUT hasn’t really darkened noticeably since (now at 11,000 miles). Also the Amsoil initially used a little bit of oil …

Feb 26, 2019 · Their site shows these two options for my F-250 6.7L. There is a fairly significant price difference between the two. Both claim to be 100% synthetic. What is the main thing I'm giving up if I …