GL4 Spec. GL5?

[Rickrod3]

I picked up Lucas 75-90 synthetic oil for my final drive Its rated GL5
googled it cannot find any info.
Is it okay to use?
what is the difference.

Tia
Rick

[CaptonZap]

They have up graded the additive package to meet new OEM specs.
It's good to use.

"The difference in GL-4 and GL-5 is that GL-4 gear lubes have half the extreme pressure additives of GL-5. Because the gear types in manual transmissions do not necessitate the use of GL-5 gear lube, GL-4 is the correct recommendation called for by most OEM’s when gear lube is required."

From http://www.amsoil.com/articlespr/200...oilbasics.aspx

CZ

[Rickrod3]

Thanks

Good link. I'll do a little reading.

Rick