Our M620 was running incredibly hot at the Cadwell TD - got up to 126 degC (258f) at one point, and I'm told at this temperature the oil is getting a bit thin to be effective, but it's not running for too long so maybe it'll be ok with regular changes like TP says.
We fitted a DP oil cooler kit and it never got above 108C in the races.
They're expensive tho, and I couldn't find a kit ouside the DP catalogue. Baines offered to make me up a couple of hoses and radiatior, but then I'd've had to get the fittings and deflector elsewhere which would have pushed the price close to that of the DP kit.
Hybrid Mode
