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Old 10-17-2019
JMorton JMorton is offline
Senior Member
Join Date: Dec 2015
Location: Antioch
Posts: 130
Default Yanmar anti-freeze

I am repairing the radiator fan & replacing the hoses on my yanmar/kholer 12.5 generator. I am getting the radiator serviced as well since I have everything apart.

My question regards anti-freeze. The manual says to use standard ethylene glycol anti-freeze with no mention of diesel additives nor testing. I am thinking of replacing it with the long-life OAT type anti-freeze that I will switch the 8V92 to at next service.

Does anyone know of a reason that I should not do this? I plan to purge the cooling system with distilled water because I have read that in the yanmar, mixing coolant types can cause foaming of the coolant, but I have seen no other caution regarding lifetime coolants in the yanmar.

Thanks for any info or experience shared!
Jim and Virginia Morton
Antioch, Ca
1967 30FCSB "Retro Active"
1988 PT 40 "Silver Shadow"
88 Jeep Cherokee "Indy"
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