are any of u guys using sinthetic? my Camaro used to whine alot(especially after autoX or track events), I switched to sythetic and it quit immediately quit, usually lasting a couple of summer months of abuse. I use a turkey baster to suck up the fluid and simply add the synthetic back. After a quick spin, I do it again to get more of the old fluid out. I'm new to BMW, any problems doing this to my E36 318i?