Cameron Evans (formerly with Redline) has always suggested 40Wt racing for these 5X flavor motors. You can probably use either but the rule of thumb is 10psi/thousand revs and 40wt hot gives you that PSI and 30wt is a little bit lower at the top end. So maybe we could get away with it but we...
I posted this to racing oils but so far no response posting here to see if I can reach a bigger audience for thoughts.
I have two BMW racecars e36 M3 and e46 330i. The easy button is Redline 40wt racing oil and it is what I have always used. I am tempted to switch because FCP EURO sells Motul...
I have two BMW racecars e36 M3 and e46 330i. The easy button is Redline 40wt racing oil and it is what I have always used. I am tempted to switch because FCP EURO sells MOtul 300v 5w40 and will allow you to return used oil and will send you new oil so I could lower my operating expenses for the...
Temps are below 115C, 239F, even in traffic. Pressure is a pretty consistent give or take 10psi/1000rpm when on track where the revs are between 4k and 7k.
In my class the engine is stock except for a cold air intake, removal of emissions devices (like the startup air pump), and a no cat 3" exhaust. The car will rev to 7000 but I have a 7 quart oil pan and an oil cooler that keeps temps well in line, normally 215-225F unless I am in traffic in...
Most of the races are half an hour sprints with an occasional 1 hour "enduro" We run Redline 40W racing in the enduro cars that do 12 hour runs and we change the oil nightly. I change my oil every ten hours.
The exhaust is open, no cats.
I have a BMW e36 M3 race car. Would the members of this forum feel comfortable running Mobil 1 0w40 European formula in a racecar?
The alternative is Redline racing 40w which I believe is a 15w40.