I have a Greddy/Grex thermostatic oil block adapter hooked up to a Mishimoto 19 row oil cooler in my R33 GTS-T.
The oil cooler is located in the drivers wheel well with ventilation cut into the splash guard to pull air through it.
The issue I'm finding is that my oil temps are very low. On track they sit at 85-90C (previously 120-130C), and on the road in winter they are sitting anywhere between 20-40C (previously 80-90C) with ambient air temps of 8-10C.
I paid extra for a thermostatic adapter so I wouldn't have these issues, but have a feeling it could be stuck open.
Does anyone have any ideas on how I can get my oil temps higher or test the adapter? I don't want to make covers for the cooler as the adapter should be doing this job.