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Originally Posted by angryBits

Service guy told me today that Chevy has a service they offer to clean the carbon build up and it's recommended to LT4 owners at 45k miles.

Funny, I just recently had mine in for the 45K service, and they said the only thing it needed was an alignment. Said all the fluids and filters looked like new and recommended not messing with the transmission fluid unless I was having transmission issues. No mention of a valve cleaning either.

[Deuce22]

Originally Posted by BAD MOOOFOOO

Not to open a can of worms, but which engine break-in method did you use?

Followed the GM spec to a T on both engines.
The replacement doesn't burn oil, but they could not determine why the engine was burning so much oil. GM took the original engine back for evaluation.

[rlarsen462]

Originally Posted by Deuce22

Followed the GM spec to a T on both engines.
The replacement doesn't burn oil, but they could not determine why the engine was burning so much oil. GM took the original engine back for evaluation.

Good luck with the new mill! Glad they took care of it.

[Les7311]

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