Quote:
Originally Posted by M0nk3y
FWIW, I have had 2 oil changes with no oil cooler.
I've had 2 oil changes w/forester coolant cooler
I've had 2 oil changes w/Perrin cooler.
Car went from DD, to AutoX DD, to Track DD. I just got my best oil sample back to date with a couple track weekends on it on a Perrin Cooler.
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Just so I understand - there are 5 samples here out of 6, the missing one was at ~1000 miles so that would have been the break in oil. If so, the way I read this is the copper/iron/silicon dropped in half with the Forester cooler, then half again with the Perrin cooler.
The other numbers that are notable to me is the phosphorus and zinc are better especially with the Perrin unit, so presumably that meant the additive package wasn't as used up.
I don't know exactly how this translates to overall longevity in terms of miles, but it seems like this is a pretty good testimonial for oil coolers in general and the Perrin one in particular.
Thanks much for posting this data.