Is It Better to Use Thicker Oil in Older Engines
Something about poor or lack of service history of my engine. Older engines with less precise tolerances sometimes required higher viscosity oils especially at higher temperatures. Do You Use Heavier Weight Castrol For An Older Engine Mcnally Institute Slightly more viscous oil will help you in protect worn bearings too. . Its the second quart that starts to change the operating characteristics of the oil. Although you should hardly notice an increase in consumption. One quart wont change it enough to worry about. Maybe modern gasoline engines but not all. Dont go crazy and change from SAE 5W-20 to SAE 10W-50 all at once. So that this can cause the oil to burn in the combustion chamber. The engine does not leak and Ive never seen a whiff of blue smoke. So if you had to add the second quart of different viscosity. If the car youre maintaining is worth extra care and extra cost Amsoil Premium Protection Moto
