Info on Merc 90 HP Power Trim OB

[ncryders]

Can someone help with figuring out exactly what engine this is. The only number I can find is A0968823 (I think). The guy I got it from said is was a 1986 2 cycle. It's on the back of a 1986 Ebbtide Montego, so the year sounds right...just want to make sure.

A few other questions I have are...
What is the correct gear oil and how much will it hold.
Correct gas / oil mixture...
Thanks for any help

 

[Laddies]

Re: Info on Merc 90 HP Power Trim OB

It's a 1986 engine
It's a 50 to 1 oil ratio
21 oz. of gear lube

 

[ncryders]

Re: Info on Merc 90 HP Power Trim OB

Thanks. Does the number I gave sound correct ? How do you read these.
Also, I assume I need standard lower unit gear oil... 90W ?
Thanks again.

 

[Laddies]

Re: Info on Merc 90 HP Power Trim OB

Actually you inverted a couple digits it OA not AO and it uses Mercury Super Duty gear lube or at lest it's equivalent