[Bmaintz]

I agree with the sludge problem, pop off the valve cover & take a peak..... An engine cleaner or even synthetic oil can do a fast clen-up & dislodge chunks that will clog your oil filter & small passages.... Amsoil also makes a good engine cleaner that I have used several times when converting from dino oil to synthetic.... Synthetic oil should also stop or slow down the sludge problem.... You can email me if you like to know how to get the Amsoil..... Bob