Racing fluids, Oil, trans... what would you use for an endurance race? Options

[ThePaintedMan]

All right boys and girls, I DID use the glorious search function, but didn't find quite the answers I was looking for. After talking with John (FourBlades) at the PCA DE this weekend about brake fluid for a track car, I thought it might be pertinent to have some of you racers weigh in on your choice of fluids. Keep in mind, the *goal* is 14 hours at Sebring. Quite likely that the first motor won't make it that long, but to give us the best chance possible, what do you think would be a good engine oil and transmission fluid to go with for a long race like that? I think 20-50 is still the go-to, but would something like Brad Penn stand up to that long of a race at temps that high? How about Swepco for the transmission? I would think both of these would call for some kind of chemistry designed for racing, but have never heard of what endurance guys use in their aircooled Porsches for long races like these.

Don't worry about the brake fluid - I think we've already decided that SRF is the only way to go.

[brant]

I'm a big fan of redline lightweight shock proof transmission oil
and HPS royal purple engine oil.

I don't find any problems with my brakes, despite not having vented rear calipers... I haven't had a brake problem with simple ATE super blue in 20 years of track work including enduro's. I think incorrect pads (and having them exceed their working heat range) often actually cause brake brake problems and the fluid takes the blame unnecessarily.