Havoline OAT Coolant substitute?

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dan87951

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Sep 18, 2014
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I have a Aston Martin DB9 that I service myself and its due for a coolant change. The owners manual says to use Havoline OAT but cannot find that anywhere in the states. Does anyone know what a good equivalent would be? Obviously the dealer was willing to sell me ridiculously priced coolant but was hoping for other options.
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Thanks
 
I believe that OAT is just about any coolant that you can find locally. Such as PEAK Long Life or Prestone Yellow JUG etc. I think that OAT's are the "All Makes/All Models" coolants but, I could be completely incorrect.

Others will chime in with more information!
 
Havoline OAT (organic acid technology) seems to be Havoline Extended Life AF/Dexcool in the US as as linked on the Hav AF site here. According to a google search seems to be difficult to find. I'd say any GM 'DexCool' product by Zerex, Peak or Prestone would be very suitable if not identical. Get the full strength and top with distilled.
 
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