Alright guys so my engine is a VQ35HR which are notoriously hard on oil. I track it about 6 times a year and its getting to where it mostly sees track use but I do like to putter around the city in it as well.
OEM recomendation is 5w-30. I have been running 0W-40 Mobil One. My oil temp on track used to be around 290. I put in an oil cooler. It went down to 275-280. So over the winter I installed a horizonally mounted dual pass bar and plate oil cooler in my splitter. It is crazy effective. I'm down to 230 and it does not go higher than that. I am redlining it the entire time on track. Half an hour straight, 5-7 sessions per track day. I block off the cooler with a composite plate so it doesn't overcool on the street. Street temps are around 185-210 depending on temperature.
With all that said, is there any reason for me to be running the higher weight oil if my temps are that low on track now. Am I just costing myself HP loss and messing up my variable camshaft timing by running a slightly different weight?
OEM recomendation is 5w-30. I have been running 0W-40 Mobil One. My oil temp on track used to be around 290. I put in an oil cooler. It went down to 275-280. So over the winter I installed a horizonally mounted dual pass bar and plate oil cooler in my splitter. It is crazy effective. I'm down to 230 and it does not go higher than that. I am redlining it the entire time on track. Half an hour straight, 5-7 sessions per track day. I block off the cooler with a composite plate so it doesn't overcool on the street. Street temps are around 185-210 depending on temperature.
With all that said, is there any reason for me to be running the higher weight oil if my temps are that low on track now. Am I just costing myself HP loss and messing up my variable camshaft timing by running a slightly different weight?