Front Differential Vent for Synthetic

[Nobby]

Do I need to change the front diff vent when changing over to synthetic? I have read about the white and black cap situation for the 2000+ later models but cannot find any info for pre-2000.
If so do you have the part#

cheers
Nobby

[sailun]

I didn't touch mine. when I changed over to synth about 2 months ago. And it's not pukin or leakin.


However, the ex's '02 Yukon puked everything out the vent the day we bought it brand new. Wasn't synthetic, though. Dealer replaced vent on warrantee.

Man, did that stink. Blew that sulferous sticky mess all over the underside and exhaust, and driveway and garage. Smelled awful on the hot exhaust.