Kent
I have the E89 35i and it is currently stage 1 MHD, it’s at 88,000 miles and I do the occasional track day and also have a Europe road trip coming up, I drive fairly spiritedly, i currently use 5W-30, but I have read that maybe 5W-40 or even 0W-40 would be best, what do you think?
Best Oil For Me?
- Thread starter George.E89
- Start date
Scottish Borders
Thank you, what makes you advise with 5w40 over 0w40 out of curiosity?
Good explanation on Pistonheads forum here https://www.pistonheads.com/gassing...0w40 is a bit,same. That doesn't mean they're
For Uk climate 0W-40 is unnecessarily thin unless the formulation does better than a 5w-40..if the car was a summer only toy I’d go for a 10w-40…everything is a compromise…
N54 works hard and needs as much protection as it can get…you want a low volatility oil with low ash…
Premium ester or pao formulations are best…
At the summit of the picturesque fens
The cold (first figure) is the important one IMO. I was advised to put 5w40 in my old M54. But the engine is very low mileage and I get very high oil pressure when cold, then it settles when the oil reaches temp, as the '40' is correct for the engine at normal temp.
The theory of using a thicker oil at cold temps is that it will give a higher pressure, so a 'worn' engine will allow it to lubricate better, cos it's being pumped around better. That's how I understand it anyway.
The theory of using a thicker oil at cold temps is that it will give a higher pressure, so a 'worn' engine will allow it to lubricate better, cos it's being pumped around better. That's how I understand it anyway.
This sounds perfect then for my N54 which is 88,000 miles