Just finished my track day at Ningbo Int'l Racepark. I did some temperature logging with the DCT cooler and aux oil cooler pumps both activated:
https://datazap.me/u/asbjoern/2nd-track-session-0?log=0&data=5-19-21-26
During this session the oem oil cooler fan was
NOT turned on. I wanted to do another session with it ON to compare, but unfortunately the day ended with a boost leak and half check engine light (30ff).
Results:
- My car reached peak coolant temps of 110C / 230F and peak oil temps of 130C / 265F in less than 5mins. This is disappointing, but at least below any limp mode set points.
- Transmission temp never exceeded 90C / 195F and iat never exceeded 50C / 125F. I believe this is brilliant.
When I study the log, it looks like the oil temp is slowly climbing throughout the session. Coolant temp does not start to climb until the oil temp passes 120C / 250F, but I am not sure if I can conclude anything based on that.
View attachment 12633
My only conclusion is that air flow to the oem oil cooler, and in particular the additional oil cooler is not sufficient to keep the engine oil temp stable. While I have not tested my oil cooler fan yet, I will go ahead and assume the additional oil cooler also need fans. So I am installing another set of push-pull fans on the additional oil cooler, and making it so both fans turn on at the same time as the pumps.
I also conclude I do not need to worry about DCT cooling or air intake cooling ever again.
Summery of what was tested today:
OEM oil cooler with fan turned off
CSF Coolant radiator
VSRF race intercooler (covering some of the coolant radiator)
SSP dct oil cooler with pump (covering some of the coolant radiator)
Additional oil cooler with no fan
The weather was 25C / 77F and humid 85%. I'm running 0W40 Mobil 1, and coolant with reduced amount of anti-corrosion and water wetter.
Sport cooling selected in MHD