Recent content by Baveux

well ok ...

I understand that a 20 still provides engine protection, but some W30, if I recall correctly and based on what I've read here before, tends to stay in grade longer than others. That was my question. Even though a W20 is protecting the engine, is it really the right viscosity for a 6.6 L8T...

if it does not matter why not starting at w20 instead of w30 ?

GM recommends 5W-30 dexos1 Gen3 for my new Sierra HD 6.6 gas engine. I won't risk voiding my warranty, but I'm curious to know if the 5W-30 dexos1 Gen 3 maintains its grade or drops to a 5W-20 prematurely.

I wonder if any noticeable differences would emerge after a decade. The most potent additive is called marketingting ting ting , and we all succumb to it.

LS1Mike, Ill get it Friday its an SLE, with most of the options available Black Onyx ... the stock was very low so the choice of color was minimal ... I had an F150 white before, i didnt want a white truck again... Ill have to work a lot harder to keep it clean for sure . I've made my bed and...

by curiosity , whats missing in this oil to meet dexos 1gen 3 .. i dont feel like gambling since this engine had in the early years of production an history of oil consumption and if this is happenning i really do not want to fight with them ... yes I know im a wuss :-)

IM about to buy a 2025 sierra HD with the 6.6. This truck will tow close to 8000lbs for about 8000km a years and maybe 3000 km as a grocery getter. GM spec 5w30 Dexos 1 gen3 and I would like to run a 5w40 but I really do not want to screw up my warranty so I will remain within the GM...

ohh.....lol

So you are saying that Quaker State Euro 5w40 is superior to the spec WSS-M2C961-A1 ? Is there a place where I can get some sort of official position on that ? Thanks again

I am planning to purchase a new 2024/2025 F250 7.3 gas. Ford recommends or requires 5W30 with the specification WSS-M2C961-A1. wonder what I would be missing from that specification if I opted for Quaker State Euro 5w40. I have high confidence in that oil and am certain it added some years to...

If it's just that, then!

Alarmguy It is generally understood that new API specifications are designed to be backward compatible with older versions. Am I wrong to believe that ?

It seems I was the only one unaware that SN alone is sufficient... :)

From BRP Canada ..... LOOKS LIKE 5w40 API SN more than enough EMAIL #1 Good day Richard, I hope you are doing well. I just received a response to your question from the appropriate team: For the oil, we recommend XPS 4T 5W40 synthetic oil. If XPS is not available, you can use SAE 5W40...