Kendall GT-1 20W50 vs. Mobil 1 15W50 vs. Castrol RS 10W60
11-28-2002, 07:35 PM
#1
Kendall GT-1 20W50 vs. Mobil 1 15W50 vs. Castrol RS 10W60
For track use, would you use Kendall GT-1 20W50, a mineral based oil, or Mobil 1 15W50, a synthetic oil, or Castrol RS 10W60, a synthetic oil, and why? And for street use which one?
11-28-2002, 09:05 PM
#2
Drifting
It may not matter to you, but the only mineral oil approved by Porsche for a 996 was Exxon/Superflow Supreme Special 15W-40. When the new list came out last year it was off the list and only a few fully synthetic oils are now approved. The highest viscosity approved oil is Castrol 5W-50.
The Boxster people I know who track their car use Mobil One 15W-50, and a local shop which races GT3s also uses it. But it is no longer on the list. Jeff
The Boxster people I know who track their car use Mobil One 15W-50, and a local shop which races GT3s also uses it. But it is no longer on the list. Jeff
11-28-2002, 11:50 PM
#3
Sometimes, perhaps, of course, not in the instance of Porsche, approval of oils for street use has quite something to do with gas mileage and, frankly, politics. I wonder, however, if, assuming you change oil after every track event, the Kendall might not provide better protection in racing conditions - particularly for the camshafts.
