4.3 mercruiser

rh92

Seaman Apprentice
Joined
Feb 25, 2013
Messages
37
Changed engine oil and gear lube today. Noticed a cap that said drive oil (not gear lube reservoir). What is this and how often should it be changed? I tried to search Google and keeps showing drive oil is the oil for the lower unit.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,285
Ayuh,..... Drive oil, 'n gear lube are one in the same,....

Got a picture,..??
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,195
My guess is this is your drive lube bottle, also called gear lube monitor. If you drive starts leaking, this bottle will keep the drive full. If you see it ever start going down get your drive checked. It is normal to loose some lube after changing drive lube, but will not continue to loose it. If it ever goes empty while running the alarm will go off

Gear Lube Monitor.gif
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,195
The bottom right item in the pic is the power steering pump, needs dexron 3 or 6 fluid (red stuff)

fetch
 
Top