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 …

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 50 Views 5K Dec 27, 2025

Jul 29, 2022 · voa of amsoil z rod 10w40. View attachment 270644 Is an oxidation value of 35 considered good? I never can get the numbers straight.

Nov 4, 2025 · The remaining two Amsoil filters I had on the shelf are in the garage's trash can. The last OCI, I continued using Amsoil SS, but a different filter brand. I chose Pentius, but I'm pretty sure …

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 …

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, …

Jan 16, 2026 · BobIsTheOilGuy Thinking about buying a new vehicle? Do you own a vehicle and would like to share your experiences?

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 …

Jul 28, 2024 · Can anyone tell me what makes amsoil signature series so great? Anyone able to explain why? Is it marketing ? I’m genuinely curious if this really is so much better then say Mobil 1, Castrol, …