Mar 20, 2026 · Amsoil oil filter bought last December ish. Ran 5k miles using HPL Premium Plus PCMO 0w40. Left the rubber band with paper towels on the filter media for...

Feb 9, 2024 · If I owned that truck, with the 3.0 Duramax, I would run a 5w40 such as VPBE, Delvac ESP, Delo 400 XSP, HPL CC CK-4, or AMSOIL Diesel oil. Diesel oil is made to handle higher soot …

Mar 13, 2024 · Both of those Amsoil filters look to have some leaf spring to end cap "seal" leak gaps. The one with the smooth looking leaf spring must have a warped leaf spring that won't sit flat on the …

Oct 25, 2010 · So besides Amsoil's XL-7500 series oil, which is not PAO, are all the other Amsoil oils non-PAO now? I cannot find a statement on their site, except regarding their PAO compressor oils.

Jan 21, 2024 · Amsoil OE is a GrpIII base stock oil while Mobil 1 0w40 is a GrpIV I believe. Both oils should get the Job done for your application That’s the thing, Mobil 1 seems to change their formulas …

Dec 26, 2005 · Hi, I am new here but have lurked a bit. I have a 1993 400E and currently have Amsoil EFM in it and was curious about whether the new HP-X is the best oil possible due to the extremely …

Nov 16, 2002 · Of course and Amsoil 100% agrees. Buster posted this, not me or Amsoil. I know the outcome here. Very few folks have attempted to answer @buster 's question. The way Buster started …

May 3, 2025 · Similar threads Amsoil Signature Series 0w-20 rstsco Jun 13, 2025 Virgin Oil Analysis - PCMO/HDEO 2 3 Replies 51 Views 6K Feb 28, 2026

Nov 21, 2024 · 2024 Silverado 3.0 Duramax, 18,800 total miles; 5W-30 Amsoil Diesel Oil 5,000 miles used oil analysis

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 …