Type of oil and vis.

[coorslitedude]

I'm new to stern drives so some of my questions might seem stupid. Since alot has changed since 1974, can I use synthetic oil and what viscosity? Does the engine and outdrive use the same oil? Setup is Volvo AQ190A/270. Thanks all.

 

[Dunaruna]

Re: Type of oil and vis.

You will find different opinions here about dino V syn, my own personal preference is to not use syn in 30 year old V8's. In fact, depending on the condition of the motor, i would tend to go with something a bit heavier than normal.

Volvo specs in 1977 called for 10w30, 10w40 or 20w40. Same for outdrive.

 

[180shabah]

Re: Type of oil and vis.

Agree, save the money and use dino oil, but don't skimp on the filter.

 

[haulnazz15]

Re: Type of oil and vis.

We have always used straight SAE 30 in our 76 Merc, but volvo may be different. Over 500hrs with nary a problem. I use Wix filters on it though, so nothing too cheap. If we rebuilt it with new seals/rings I would probably use Mobile 1 or other synthetic.