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Originally Posted by fourfourto
How can they not change it  . When you remove the head you would contaminate the oil and coolant.Usually coolant gets into the oil upon removal.
The dealer should know better.  |
I agree, in fact, GM pays them to change the oil AND the coolant after a cylinder head removal.
From the Service Manual:
57. Install NEW engine oil. Refer to Engine Mechanical Specifications .
58. Install NEW coolant. Refer to Draining and Filling Cooling System .
However, all they will be paid for is GM authorized coolant and oil; therefore, getting them to add synthetic will be up to the dealer.
If the head job is done correctly (such as new torque-to-yield bolts used where required, torque is applied correctly, valves are lapped correctly into the new head, it will be as good as new. The quality of any repair is dependent upon the technician performing the job.