This is would be in use for a 1999 Volvo Penta 5.0L GI (Throttle Body Injected EFI)
I know a lot of people that swear by the conventional Rotella 15w40, but I have been running synthetic Straight Weight SAE30 (per manual) since the boat was new (just passed 600hours). Volvo Penta then discontinued the SAE30 a few years ago.There was a lack of clarification of what oil was now suitable for 2007 and prior engines. Per a Service Bulletin issued older gas powered Volvo owners were to just use Volvo's branded 15w40 VDS-3 Diesel oil (which is a non synthetic) after years of recommending only synthetic SAE30,or pure synthetic 20w-50, 15w-50. Frankly I think Volvo will sell what keeps their SKU count the lowest.
I would use mobil's 15w50 synthetic, but I think a 50 weight oil ,even after shear down, on a non-carbureted, would be a little thick for my needs in a 5.0 liter engine that is fuel injected and not run 'hard'. I can see the guys running the big block 7.4/8.1 or top end 5.7's maybe needing it.
Has anyone started using the 5w40 T6 in a marine application?
The 5w rating is the only thing that is giving me pause on using it. I know Merc and Volvo typically like oils that have a closer Cold flow and Operating Temp rating (i.e 20w40), but at the same time isn't the 5w spec irrelevant as I would only be using this in temps above 50F, mostly 70-85F 95% of the time?
Any advice would be great
I know a lot of people that swear by the conventional Rotella 15w40, but I have been running synthetic Straight Weight SAE30 (per manual) since the boat was new (just passed 600hours). Volvo Penta then discontinued the SAE30 a few years ago.There was a lack of clarification of what oil was now suitable for 2007 and prior engines. Per a Service Bulletin issued older gas powered Volvo owners were to just use Volvo's branded 15w40 VDS-3 Diesel oil (which is a non synthetic) after years of recommending only synthetic SAE30,or pure synthetic 20w-50, 15w-50. Frankly I think Volvo will sell what keeps their SKU count the lowest.
I would use mobil's 15w50 synthetic, but I think a 50 weight oil ,even after shear down, on a non-carbureted, would be a little thick for my needs in a 5.0 liter engine that is fuel injected and not run 'hard'. I can see the guys running the big block 7.4/8.1 or top end 5.7's maybe needing it.
Has anyone started using the 5w40 T6 in a marine application?
The 5w rating is the only thing that is giving me pause on using it. I know Merc and Volvo typically like oils that have a closer Cold flow and Operating Temp rating (i.e 20w40), but at the same time isn't the 5w spec irrelevant as I would only be using this in temps above 50F, mostly 70-85F 95% of the time?
Any advice would be great
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