Hooray for Blackstone

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Aug 20, 2003
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I have finally made a believer out of my boss regarding UOA's.The water district I work at has had several engine failures because of coolant leaks.I sent in a UOA on one of our trucks and antifreeze was detected. Sent the truck to Chevy and they couldnt find a coolant leak.Well they changed the intake gasket per my order and they were non comittal about if that was it or not.Sent in another UOA and what do you know,no antifreeze,low wear numbers and low insolubles.Thank you Blackstone!
 
never had a UOA performed, How much does it cost on average? How long does it take to receive the info? I wouldnt use it for normal OCIs, I'm quite happy with my super tech/ stp filter 3-4k OCI regimen. But it may prove useful somewhere down the road for diagnosis TIA
 
Hooray for Blackstone.

Another black eye for GM and their dealers.

Did you have to pay for the gasket change? Or was it warranty work.
 
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