| http://www.w3.org/ns/prov#value | - Thanks a lot for your help and best regards Hardo Your engine is not as troublesome as the 4.1 litre engine.They made improvements on the 4.5 and then the 4.9 litre.Yes,you should use GM supplement tabs",not taps,in the cooling system.You can also use BARS LEAKS GOLD POWDER--comes in a plastic tube.I use 2 tubes of it in my 4.9 litre.Your 4.5 litre can use the same.
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