OIL service classification

[Dogcrazy]

I want to know what the letter designations for oil classification mean.? I have a 400ex and the manufacturer say's SF/SG. Is there a different stress level for the oil has to acheive to reciec a differnt classification. SM,SF,SG,SJ and so on. Thanks you, This forum rocks.

[Outlaw 50]

Go here and read this. www.pennzoil.com/autosmarts/carsmarts_story.asp?storyid=ccr20030901og

[1987 trx350x]

you should run anything besides the manufacturers specs, because the other oils have 'anti-wear' additives in them, and they WILL eventually cause your clutch to slip.

[Rico]

as long as there are no friction modifiers you'll be fine.

Put heavy duty clutch springs in and you can run oil with the friction modifiers. I did it for 2 years and no problems. Also the clutch slipping theory only happens with 400ex's and stock clutches.

friction modifiers are a good thing to be honest.