Try using Seafoam 200 miles before your next oil change, i'd pretty much guarantee that the noise will be eliminated cause the sludge and varnish would be removed. The oil will come out looking blacker than saintains heart.
Recomend, change the oil, DO NOT add any addidtives, then add seafoam to the crankcase and upper cylinders 200 miles before service, change the oil, THEN add tufoil.
The results will astound you.
http://www.seafoamsales.com/motorTuneUp.htm
Recomend, change the oil, DO NOT add any addidtives, then add seafoam to the crankcase and upper cylinders 200 miles before service, change the oil, THEN add tufoil.
The results will astound you.
http://www.seafoamsales.com/motorTuneUp.htm