fan switch and thermostat

[bennjamin]

agree with e240

i beat the living crap outta my engine for 12 straight laps the other day & temp issues were non existent,admittedly it is a stock engine though.

did the same at the same time with a actual stock engine with stock thermostat , fan switch and coolant etc , and temp still wasnt ever an issue.
OEM parts and fluids when properly maintained are fine.

The only way to overheat a untouched engine is to drive in reverse for a few minutes and watch the temp gauge soar.