Subie Coolant

[TooSlick]

Just picked up a 2006 Outback and am looking ahead to the recommended coolant change @ 30k. Anyone know what type of chemistry is used for the OEM coolant, ie OAT/HOAT, etc. Also, is it low silicate, no silicate, etc....

Thanx!

TS

 

[Buford T. Justice]

What does the owner's manual say? It should tell you the type of fluid or OEM requirement in the capacities section.

 

[JayhawkRoy]

I believe our 2004 speaks generically to ethylene glycol as a requirement. Consensus at www.ultimatesubaru.net is to use the green and change at 30K as recommended in the owner's manual. Subaru sells a "long life" coolant, but that seems absurd, considering the 30K owner's manual recommendation for coolant change out.

 

[jmacmaster]

My 03 Subaru Forester owner's manual recommends ethelene glycol, the green stuff, changed every 30,000 miles. There's no reason why you can't switch to either G-05 or Dexcool, as long as you first flush out all of the existing coolant. I have 40,000 miles on the Forester, changed the coolant at 30,000 miles using ethelene glycool, and at 60,000 miles I'm going to switch to G-05, which is just as good and lasts longer.

 

[Ed_T]

My 05 Legacy GT calls for Subaru coolant only, and that's what I'll use at the 30K mile service.

I believe its a non-silicate, high phos mix.

 

[Eddie]

I asked the question of Zerex and their recomendation for my 2000 Suby was to use their G05 coolant. I've been using G05 (pepBoys) for the last 90,000 miles with out an issue. I change every 30,000 miles or so.

 

[TooSlick]

I'll probably run the "HOAT", Amsoil PG coolant I used with good results in my Tacoma pickup. It sounds like the subie coolant is a generic EG type product.

thanks!

TS

 

[Excavatoree]

To the best of my knowlege, it is conventional coolant, not OAT, with no silicates, but with phosphates.

Conventional coolant sold at auto parts stores, etc. is not silicate free, so I'm not comfortable using it.

OAT coolant is silicate and phosphate free, but I'm leery of mixing the OAT with the conventional.

By the way, almost all coolant is ethylene glycol. (except for brands marketed at safe for pets, which is propylene glycol) The difference is the additives.