[dremd]

As some one who has coked up turbos in the past I may have some insight.

Below are my ***understandings***

1) PSI is not what is going to cause failures (preventable with a turbo timer), center housing temps are (which are largely dependent on EGT's. ("we" are cooking the oil in the turbo after shutdown, which leads to coking, which leads to poor lubrication then failure)

2) Synthetic oils ability to withstand much much higher temps is a huge asset here.

3) If we are running our center housings (turbo oil temperatures) up near/ above coking point, then we will have very quick oil breakdown (another god point for doing Used Oil analysis).

4) if the center housing is not at/ near the varnish/ slugging/ coking point then the heat soak from exaust should not push the center housing up too much farther.

5) even the worst oil available today is better than almost any oil available 20 years ago.

Anybody interested should go hang out on Bobistheoilguy, not so much for opinions, as for information.

If any of my understandings are wrong, please correct me.