Slow External Head Gasket Leak
I have a very slow external head gasket leak on my 1998 V8 with 190k miles. It’s just a little coolant residue that builds up on the outside of the block over time. Do you disco experts have similar weeping or is this typical of a head gasket ready to blow? I don’t know when or if the head gasket was previously replaced. The vehicle drives great, holding a steady 190F.
Yep, what Walt said. I'm beating around the bushes with the same issue. For now, I'm driving with the coolant reservoir cap slightly off, so everything behaves normal, but I gathered all the gaskets and bolts for the head gasket job already...
I've been driving with the cap a little loose for yrs... LOL. I don't drive mine all that much so been kicking the can down the road on the HG's. This coming summer I think I'll change the HG's.
If your leak is external that's even better. But if a guy has a HG leaking *internally*, he should fix it right away as coolant can kill catalytic converters ....and then you have more expense/work ...or look at CEL's all the time.
If your leak is external that's even better. But if a guy has a HG leaking *internally*, he should fix it right away as coolant can kill catalytic converters ....and then you have more expense/work ...or look at CEL's all the time.
Last edited by Mark G; Dec 30, 2025 at 10:32 PM.
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