Originally Posted By: dparm
Originally Posted By: Bluestream
Thanks Guys, I am getting low on my stash of GC 0-W30 and I can buy the 0W40 cheaper in a 5 liter jug. I Thought the SL rated oils have more zinc, which is good for high RPM motors, I use this oil in my 1.8L VW, and my Sea-Doo and Ski-Doo 4 strokes...
Zinc is not necessarily better for high RPM motors. The benefits of ZDDP are greatly exaggerated, especially for modern engines. There are newer additives that offer the same or better performance.
Unless you are running some old-school flat tappet engine, I see no need for elevated ZDDP.
There's a TON of info on the BMW bike sites on zinc and flat tappet motors like the boxers BMW used to build.
Originally Posted By: Bluestream
Thanks Guys, I am getting low on my stash of GC 0-W30 and I can buy the 0W40 cheaper in a 5 liter jug. I Thought the SL rated oils have more zinc, which is good for high RPM motors, I use this oil in my 1.8L VW, and my Sea-Doo and Ski-Doo 4 strokes...
Zinc is not necessarily better for high RPM motors. The benefits of ZDDP are greatly exaggerated, especially for modern engines. There are newer additives that offer the same or better performance.
Unless you are running some old-school flat tappet engine, I see no need for elevated ZDDP.
There's a TON of info on the BMW bike sites on zinc and flat tappet motors like the boxers BMW used to build.