This weekend I switched from Mobil 1 to Red Line and have noticed a significant difference in performance in my boxster. I thought about Royal Purple too, but it seemed more people swore by Red Line. I will definitely be using Red Line on the next change. BTW, I used the 5W40.
James
Last edited by salerno501; 04-09-2009 at 09:53 AM.
Reason: update
Nope I do mean Liqui-moly. Same company, but I think its designed for European sales. I don't have any of the old bottles laying around. But here is a link to a site that has it. I'm sure people are selling off stock. And what I heard could be a rumor, but it has always been hard to find. I was getting it for $42 for 5liters at one point.
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2005 987 - 112K miles PASM + 6-speed - Daily Driver
1988 944 - 240K miles- Race Car
1974 911 Targa - new project
2009 Triumph Street Triple R - 27K mi - Blazen Orange
1976 Ford F250 camper special - tow vehicle
The car felt like it ran smoother, the engine sound was better, and improved pick-up. I know it sounds like an ad or something, but it was true, at least in my case. Not a randomized, controlled trial or anything, but that was my observation.