Mr Googler
Well-Known Member
As i understand…..green is an early HOAT. Closer to an old fashioned IAT from what ive read. Yellow is a true OAT and the new orange is an Si-OAT. I thought OAT and Si-OAT are fine together? The bulletin above supports that (yellow/orange). OAT/si-HOAT dont get along with HOAT/IAT at all.we run Volvo trucks and use Volvo antifreeze we were told by Volvo never to mix green/yellow as it goes like chewing gum
Also you cannot mix the new orange/red as well so we have to flush through and use orange
From Volvo you can not get green or yellow for trucks
I have a boat and use yellow but will have to change to orange
We still have g/y in stock but only for topping up
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