Volvo Penta SAE30 Replacement

if you arent buying marine oil I'd go "extreme" 20$/4qt
The delvac 1300 is ok but group II blend vs full syn. less than 10$ more an oil change.
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Boats have nearly unlimited cooling and oil coolers, with usually ~160F thermostats. They don't get as hot as car engines in my experience. If you exceed 212F in the heads/jackets you see steam behind the boat and you know you have a problem...as the raw water is boiling before it leaves with the exhaust. While marine engines are worked hard...they are kept cool if everything is working correctly.
I don't think any Mercury or Volvo inboard/outboard stern drive engine comes with an oil cooler and if so it's not anywhere near all models and more likely special production racing engines.
 
I don't think any Mercury or Volvo inboard/outboard stern drive engine comes with an oil cooler and if so it's not anywhere near all models and more likely special production racing engines.
And neither is temperature a problem here nor has the OP indicated anything of the sort.

A concern over operating temperature is a sideshow that was created by a poster other than the OP.
 
Renewable lubricants makes a HD synthetic SAE 30. I just ran it 14,000 miles in a 2.0 Opel diesel engine and the UOA is fantastic.

I’ll post it up tomorrow after I get to a desktop and can edit my personal information out of the Polaris report.
 
I don't think any Mercury or Volvo inboard/outboard stern drive engine comes with an oil cooler and if so it's not anywhere near all models and more likely special production racing engines.

I would most humbly disagree and say most of them DO come with an oil cooler. Actually a lot of them come with power steering coolers as well!
 
I would most humbly disagree and say most of them DO come with an oil cooler. Actually a lot of them come with power steering coolers as well!
(EDIT) @DriveHard
Power steering coolers are a given but few oil coolers.
I just looked up parts numbers. I can see it was hit or miss if an oil cooler was used. But a huge amount do not on this list.
I've been boating for 4+ decades and never had one or remember one but I see some engines (at least until up to the 2008 parts list did have them but a large number did not. I do not know if those that do, I suspect maybe were higher performance (racing) engines maybe?

If a boat has an engine oil cooler it would be easy to tell. there would be an adapter with hoses right at the oil filter. I never saw one on any boat I or anyone I know. Though you made a good point. There must be some, I just dont know what applications they are used for.
 
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(EDIT) @DriveHard
Power steering coolers are a given but few oil coolers.
I just looked up parts numbers. I can see it was hit or miss if an oil cooler was used. But a huge amount do not on this list.
I've been boating for 4+ decades and never had one or remember one but I see some engines (at least until up to the 2008 parts list did have them but a large number did not. I do not know if those that do, I suspect maybe were higher performance (racing) engines maybe?

If a boat has an engine oil cooler it would be easy to tell. there would be an adapter with hoses right at the oil filter. I never saw one on any boat I or anyone I know. Though you made a good point. There must be some, I just dont know what applications they are used for.
That's what I remember too but I got out of boating a long time ago and things change. Kinda why having an oil cooler and oil temperature is important.....
 
Racing engine/ Classic car. Why not? Loaded with good stuff. Looks much better than all the generic 30 sae out there like supertec.
Race oils and classic car oils are different.

TRUE Race oils are relatively low in anti-oxidants, detergents, and other additives designed to suspend dirt.
Classic car oils have those additives, and can have higher AW additives.

Not a good choice for a boat engine unless racing and replacing oil.
 
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