I have a 1994 Nissan Pathfinder SE, V6, manual transmission with 164K plus miles. She doesn't use oil, but she has developed a bit of noise under the hood. I am thinking that it may be some sticking lifters or pistons and I would like to know what type of oil or additive that I could use to clean her out. I have already ran some Gumout ® Regane ® in the fuel system. I was thinking of using some MMO for the lat 1K miles before the next OCI. So is there anyone will to offer some suggestions with some data that I can research to back it up. I do have reservations on using any type of strong solvent, because I do not want to risk damaging her motor. Thanks in advance for anyone willing to contribute.
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