My 1883cc Porsche 356 912 Blog

Chronology of a hot-rod street Porsche 356/912 1600 to 1883cc conversion based on LN Engineering's Nickies big bore kit.

Tuesday, July 04, 2006

Oil temperature vs. viscosity

I've isolated that it wasn't the 10w60 Castrol TWS being bypassed by the pressure relief and not being cooled. I took the 912 for an extended drive across the border into Indiana about 20 mi each way and actually had to turn back to Indiana since there was a slow freight train blocking the route. The oil took longer to warm up, but this time I traveled with my calibrated oil temp dipstick and recorded 240F. The weather conditions were 85F, 71% humidity, and 29.98in of Hg. I noticed that very quickly, the oil would drop some 5-10F just by pulling over to check the temperature. I also tried keeping it out of 5th to keep the rpms up and that was good for a few degrees, about 5F cooler at the max. Either way, it's hotter than with the Royal Purple.

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