Originally Posted By: CATERHAM
Cold oil pressure tells one very little.
What was the recommended oil of the day?
Do you know what the recommended oil pressure spec's are (hot)
on idle and at elivated rev's?
The Valvoline Phos levels are lower than I'd like; clearly M1 0W-40 is a superior oil and readily available.
It's Phos level is 900 ppm, and while it is a light 40wt, due to it's modern high 185 VI is much lighter on start-up than a typical 10W-30 like Shell Rotella T5 10W-30.
The Triumph has an old engine but it doesn't mean you can't take advantage of the lastest in lubrication technology.
While I realize that cold pressure tells us very little, I just posted it to relate what I do know about it - that's why I said that it "seems" okay... I haven't been able to really run the car much due to the fuel pump diaphragm and the resulting drive-ability issues.
As for what was recommended, I have no clue. That's primarily why I'm asking actually. I was hoping someone would know, to help me decide.
While I realize that M1 0w-40 is likely one of the better choices, I'm going to go out on a limb and say that my boss wont spring for it. On top of that, the condition of the engine is unknown. I don't want to pour an expensive lube in there that will leak out or get burned up quickly. We are not re-building the engine, merely getting it road worthy. I'm sorry, I should have mentioned that earlier. If I can stay with a conventional or a blend, that would probably be ideal for this situation. So it seems like we're back to the HDEO?