My 603 has always run fantastic. The fuel economy generally runs up above 29 on summer fuel. Plenty of power (11 sec to 60) and almost no smoke. No pressure in the cooling system and insignificant loss of coolant.

Had the oil sampled and tested for the first time after 5K on the oil.

Sodium: 62 ppm

Potassium: 96 ppm


You never can tell without the analysis.