I have a 08 F350 SD with 110,000 miles. I change the motor oil between 3000 & 3500 miles. I'm running KEM tunes with a K&S tuner. Driving yesterday I noticed the oil temp slightly unstable and ranging from 203 - 213 deg. For the past several years this truck never went over 203 deg. Is this a sign the oil cooler is going bad? and if so what's involved in replacing the cooler. Thanks in advance.
no, I'm not running any coolant cooler - can you flush the oil filter? I'm real religious on changing the oil and use Kendall 20w50 and have on all my trucks from my 87, 93, 02, 06, 08 Fords & 1-Dodge (thought I would try one out) and 3 medium duty International Trucks DT466
I've never have done a flush on the coolant system and have not run any tests either.
how does the coolant flush effect the oil temp. I understand you keep the engine cool will keep all fluids cool but I thought there is a oil cooler? am I incorrect in my thinking?
yes it was a 2006 w/ the 06 engine sold it with 76000 miles - sold it - hauled the trailers great - sucked in the sand - fell for the 08 and haven't look back since - great truck. has a minor issue here and there but don't they all.