Dec 30, 2005 · Please note: GM dexos R engine oils meet or exceed the performance of GM dexos 2 and GM dexos 1 Gen 2 and Gen 3 oils and are backward compatible, therefore vehicles equipped …

Apr 28, 2023 · Web link. Saw the following on the GM Dexos website: “Please note: GM dexos 2 is being discontinued in 2025 and replaced by GM dexos D and GM dexos R. Vehicles equipped with …

Jul 19, 2022 · Dexos isn't a ingredient, it's an approval rating where gm makes money every time a qt is sold.,, The math works out to $0.0005 a quart for the Dexos licensing fee. Meanwhile, XOM's trailing …

Aug 30, 2007 · We just purchased a new 2023 Suburban with the 3.0 Duramax, our first diesel. GM calls for 0W-20 Dexos D certified oil, which sadly, is in short supply. I'd like to find an alternative oil that I …

Dec 13, 2024 · This is the first two oil analyses I've done on my 2024 GMC Sierra Duramax 3.0L LZ0 engine. Both times I've replaced the oil and filter with the ACDelco Dexos D 0W-20 oil and the PF66 …

Oct 27, 2018 · I would assume the ultra is the superior oil, why it's not Dexos certified? Different additive package? Cost to Pennzoil? Random reasons? I don't have a GM vehicle! And I'm between using …

Aug 30, 2004 · We are more than six months past the first license date of Dexos 1 Gen 3 (9/1/21) and the list of approved oils remains relatively short. Most notably, all flavors of Mobil 1 are missing from …

Jan 14, 2024 · You can use non-Dexos oil in a vehicle that calls for Dexos, however if you have an engine failure while under warranty they can in fact deny the warranty claim, some of the people on …

Dec 23, 2023 · GM dexos 2 is being discontinued in 2025 and replaced by GM dexos D and GM dexos R. Vehicles equipped with diesel engines that used GM dexos 2 engine oil will use GM dexos D …

Mar 28, 2010 · The dexos specification is exclusive to General Motors, and any oil carrying the dexos logo is suitable for meeting GM warranty requirements. To meet the dexos requirements, an oil must …