What lubes and where on OMC outdrive

[bamguy]

Recently purchased a 1984 Rinker with a 3.0 liter OMC engine and outdrive. I have no experience with OMC outdrives and there seems to be several fill and drain ports on the outdrive in addition to the usual lower unit ports. Attached are pictures. The two ports on the top portion of the outdrive seem to have lower drain ports associated with them, however those two ports are not pictured. Looking for what types of lubricants should be used and what the various ports are for. Also need to know if I should add the lubes from the bottom ports as you would on the lower unit. Any info would be appreciated. OMC is uncharted territory for me.

 

[Howard Sterndrive]

Re: What lubes and where on OMC outdrive

need to know if I should add the lubes from the bottom ports as you would on the lower unit.

yes.

80W90 gear oil goes in all 4 compartments on that drive. (Intermediate, upper, lower, tilt)

the tilt clutch calls for 30W engine oil, but you can use 80W90 in it too

 

[full stringer]

Re: What lubes and where on OMC outdrive

yes it does call for 80-90 w gear oil but you must use HIGH VISCOSITY GEAR OIL ONLY penzoil sells it at walmart for about 8 bucks a quart. as for your tilt clutch housing double the housing seal on it and replace the fluid w/ marine tacky grease (pack it in there) u wont get water intrusion and it will save u the headache of replacing your tilt motor later on as for the filling of all the outdrive fluid u must do each section 3 total seperately and always fill from bottom up pumping it in until fluid runs out the top fill opening of each section lower upper and intermediate housing see ya, good boating!!