outboard lower unit oil and I/O lower unit oil

[PowerAddict]

can you use outboard lower unit oil in a I/O lower unit? what are the differences between the two?

 

[Laddies]

Re: outboard lower unit oil and I/O lower unit oil

The are basically three types of gear lube a basic petroleum 90# oil, Type C for OMC electric shift units 80# I believe and synthetic gear lube all meet the GL 5 specification, don't mix any with the other type but all will work in modern stern drives

 

[PowerAddict]

Re: outboard lower unit oil and I/O lower unit oil

so if i wanted to use outboard gear lube, just be sure whats in my lower unit is drained out?

 

[PowerAddict]

Re: outboard lower unit oil and I/O lower unit oil

???

 

[Scaaty]

Re: outboard lower unit oil and I/O lower unit oil

Helps to bring up just what outdrive, as old bulletproof Volvo's use straight 30 or 40wt

 

[PowerAddict]

Re: outboard lower unit oil and I/O lower unit oil

its a pre-alpha I think. as its from 73.

 

[Don S]

Re: outboard lower unit oil and I/O lower unit oil

Mercs Hi Performance gear lube is recommended (By Merc) in all Merc IO's.
It's synthetic and about as good as it gets for Merc outdrives.