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husker boxster · 07-11-2018, 07:14 PM

Don't think you want to mix Pentosin and Redline. Totally evacuate and fill with Redline or top off with Pentosin.

Many have done the underdrive pulley but I run the stock setup (with no cooler either) with no issues on my CSS. I've done 3 3-day DE's at 20 turn COTA. BUT, I check the level before every DE.

Good luck, we're pullin for ya.

07-11-2018, 07:14 PM	#16
husker boxster Registered User Join Date: Sep 2006 Location: Omaha Posts: 2,947	Don't think you want to mix Pentosin and Redline. Totally evacuate and fill with Redline or top off with Pentosin. Many have done the underdrive pulley but I run the stock setup (with no cooler either) with no issues on my CSS. I've done 3 3-day DE's at 20 turn COTA. BUT, I check the level before every DE. Good luck, we're pullin for ya. __________________ GPRPCA Chief Driving Instructor 2008 Boxster S Limited Edition #005 2008 Cayman S Sport - Signal Green 1989 928 S4 5 spd - black