Do you let your turbos cool down?

[JHZR2]

I would be concerned with oil coking, even if water is flowing. Oil is at the bearing surface, water is not. The bearing surface is hot, water is pulling heat away, but from a distance relative to the heat center where the thinnest oil film exists.

[The Cthulhu]

Originally Posted by Formel1

Former old school Lotus owner...and that would be an affirmative...at least with spirited driving.

I'm assuming a turbo espirit? Info!

[jeremyc74]

Originally Posted by JHZR2

I would be concerned with oil coking, even if water is flowing. Oil is at the bearing surface, water is not. The bearing surface is hot, water is pulling heat away, but from a distance relative to the heat center where the thinnest oil film exists.

The reason oil cokes on a turbo engines is because the bearing temperature is allowed to rise to the same temperature as the exhaust side of the casting after water cooling is stopped. The after-run pump should completely prevent that on these cars. The bearings themselves aren't hot enough to damage the oil under normal circumstances.