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Switched to higher viscosity oil and getting higher temperatures
Previous owner was running Mobile 1 10w30 fully synthetic. I drove the car pretty hard with this oil and the temp never got above 200.
I had some minor issues taken care of last week and had my mechanic change the oil to Brad Penn 20w50. The first time I drove it the temp quickly went up to around 9'oclock (225?). As I drove it went between 200 and 225 depending on the traffic.
It seems counter intuitive to get higher temps with thicker oil. Is this normal? Anything I should watch out for?
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