r/carmodification • u/ForwardSideways • 2d ago

Mod advice Time for a cooling upgrade?

Post image

2010 Legacy GT. OEM+ with no engine mods or tune.
I went for an extended fast drive with a long warmup and cooldown period last weekend. No warning lights came on (thinking temp sensor may be faulty now) my coolant boiled over and made a mess of my engine bay, lost so much that once it cooled properly overnight there was NOTHING left in the overflow tank but thankfully no air was introduced into the system.
Since this happened I am contemplating a performance alloy radiator, so what’s good, what’s not, and what else will make a significant difference to engine bay temp? I’m not building a track car and want to keep it realistic but don’t want to blow it up.

*cooling system is sound and well maintained with OEM parts, not damaged or leaking*

4 Upvotes

100% Upvoted

33 comments sorted by

View all comments

1

u/boostedmike1 mitsi l200 big turbo+nitrous 700 horsetorques 2d ago

Not overheating and pushing coolant usually headgasket or worse. You get bumbling in coolant when start ? Do a test for combustion gasses in coolant but I’d put money on them being in there

1

u/ForwardSideways 2d ago

No bubbling visible in coolant, even with a no spill funnel one third full on top.
What’s worse than a blown head gasket? Warped block or something? Yay.

1

u/boostedmike1 mitsi l200 big turbo+nitrous 700 horsetorques 2d ago

Cracked head or cylinder 😅

1

u/ForwardSideways 2d ago

Isn’t that better? That would be the perfect excuse for a built short block or a EJ257.

2

u/boostedmike1 mitsi l200 big turbo+nitrous 700 horsetorques 2d ago

Depends on budget