Last time we heard from Fox’s Gary Gastelu, he was reporting that his test Z06 gave up during his track run in a spectacular shower of oil and grease and bits and fun.
Now, he says Chevrolet has told him what went wrong and it’s a familiar story:
After bringing it back to Chevrolet HQ for inspection, the engineers determined that the likely cause was a piston connecting rod bearing that was damaged by debris in the oil that was left behind after tapping the threads for the oil filter. Once a piece gets jammed in there, it starts creating more debris, which keeps making things worse until finally … kablooey. In this case, it took out a few more pistons with it.
Chevrolet says that the number of affected engines are in less than one percent (they all seem to be early engines, with contaminated oil and fewer than 2,000 miles) of all Z06 cars.
Gastelu said the tester Corvette he drove never received the oil change after 500 miles that Chevrolet recommends to keep the engine from catastrophic failure. The cause for the failure may be thread shavings for the oil filter that may have made their way into the engine and circulated through the engine.
The post Chevrolet Says Journalist’s Packed-up Corvette Z06 Had Dirty Oil appeared first on The Truth About Cars.
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