With that milage, I assume this is covered by the warranty ?
I'm thinking HG.
Why was the new short block installed 1500 miles ago ?
178,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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