Reason why I'm asking is that I have decided to get UOAs done on my cars. Unfortunately, I forgot which oil went into which vehicle. I'm primarily interested in finding out if any coolant, fuel, or silicon is in the oil. I have looked at PQIA VOAs, and some UOAs here, and I"m not seeing anything above single digits for either one, but I thought I'd ask, before spending the money just to find a big question mark as to how much coolant is in the oil. If it matters, the M1 was 5w20; the Pennzoil Platinum was either 5w20 or 5w30, but I'm pretty sure it was 5w20; also, I'll probably go with Polaris/OAI.
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