Can Oil additives stop lifter tick on GMC engines?
The answer is maybe.
Since lifters can malfunction from dirt of stopped up cappiliaries in getting oil to the lifter at idle, n oil aditive to help clean up the oil and aid oil flow to the lifters can make the difference sometimes. Some people report great results, and others not so much.
Results seem to be partially dependent on what is wrong with your engine. If it is just a matter of oil getting to the lifter, and the channels delivering the oil aer cleaned up of muck, it could cause the olifter to begin to work normally and reduce the noise significantly.
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