Oil Changes

Unknown

Hello Guys and Gals,



I'm going to post a topic which will no doubt stir up a certain amount

of disagreement: Motor oil. Some time ago I did some fairly

extensive research on popular oil brands, comparing mainly Pour Point

(degrees F), Flash Point (degrees F), % ash, and % zinc. This

research led me to believe that three of the best motor oils available

are Amsoil, Mobil 1 Full Synthetic, and Valvoline SynPower. I

researched both synthetic and conventional oils, and as expected,

synthetics win in side-by-side comparison. Amsoil is a good product,

but I refuse to use it because they cannot spell Porsche on their

bottles (Porche). Back in my mechanicing days I used conventional

Valvoline. The fact that Mobil 1 is factory fill on a lot of fine

vehicles (Chevrolet Corvette, BMW, Mercedes-Benz, Dodge Viper,

Porsche) led me in that direction. Most old cars, our Hudsons

included, suggest using a "Medium-heavy bodied oil that will flow at

low temperatures". Bearing this in mind, on these vehicles I use

Mobil 1 15W-50.



Now, for the question. How often to change oil? The manual suggests

500 miles. But, as we know, motor oil technology in the Super Six

days left a lot to be desired. Today we have multiweight synthetic

detergent oils that are designed to encapsulate and suspend

contaminant particles within the oil and prevent those particles from

contacting critical surfaces. But, the flipside is, we still don't

have oil filters.



On modern cars using synthetic oil with a good filter I typically

change at 5,000 miles. Using conventional oil, at 3,000.



Could I get some feedback on Super Six oil change intervals?



Best Regards,

James Coats