I have a D/R 5spd and want to know whether I should use gl4 or GL5 lube in it. The owners manual seems to say GL5, but I wanted to be sure. I'm looking at the BG ultraguard.

 

Thanks guys, I did a search, but came up with little definite info.

If the manual says GL5, then use GL5

I have no clue about gl-1 though 5 is that a rating?

 

"A GL-4 or, to a greater extent GL-5, lubricants can, if not properly

formulated, become corrosive to yellow metals if the lubricant temperature exceeds 250 degrees F. The API recently came out with a new specification to address this possibility. It's called MT-1.

Use the highest rating you can get your hands on - they are backwards compatible.

 

GD