Coolant Type on Volvo Penta

[silversupercooper]

Anyone know what type of coolant Volvo Penta specifies for their engines?

I have a close-water cooled HP 525 DPX that is currently filled with "orange" coolant. The manual says nothing about coolant type or mixture ratio.

The boat is new-to-me, so I'm not sure if the coolant in the system now is the same as originally filled at the factory...or if it matters.

Thanks,
Jeff

 

[Haut Medoc]

Re: Coolant Type on Volvo Penta

I don't know what they specifically call for, but I doubt if it is anything other than regular anti-freeze mixed 50/50 with distilled water......​

 

[Don S]

Re: Coolant Type on Volvo Penta

This is from the 2004 service bulletin from Volvo.


Coolant Change for Fresh Water Cooled Gasoline Engines
Volvo Penta Fresh Water Cooled engines built after July 12, 2004 and commencing with
serial number 4012133180 will be shipped from the factory with Ethylene Glycol coolant.
This is the same specification coolant that is recommended in the owner’s manual and is
offered for service through Volvo Parts. Volvo Penta coolant is available as listed below:

Important Note:
?Ethylene Glycol must be used to “top-off” or
refill engines shipped with Ethylene Glycol
starting with the above serial number.
?Ethylene glycol can be used to “top-off” or
refill engines shipped with Propylene Glycol
with serial numbers lower than the above
serial number.
?Propylene Glycol must never be used to “topoff”
or refill engines that contain Ethylene
Glycol.

 

[JustJason]

Re: Coolant Type on Volvo Penta

Long story short....
green antifreeze is regular ethylene glycol... Works good
Orange antifreeze is propylene glycol.... Works better
You can buy both an an autoparts store.
Orange antifreeze is sometimes called "Dexcool"
The engine should be 50/50, 50 percent antifreeze, 50 percent water.
When you go to buy it, sometimes the containers are sold as 50/50 (and its a ripoff to buy it that way). And sometimes its sold as 100 percent antifreeze and you mix it yourself.