I agree with "cheapest insurance you'll ever buy", but you should get much more out of a synthetic than a regular motor oil. I change the oil in all of my cars that use regular motor oil at 3,000 mile. I changed the Mobil I in my corvette at 4200 mile and at that the DIC said I still had 60% to go??????
Why use Mobil I (or any synthetic) if you aren't going to get extended use? I have 149,000 on my Tahoe and it burns no oil and run like it did the day I picked it up at the dealer.... using regular motor oil with oil changes every 3,000 miles????
I have some older vehicles that run fine... and who knows what kind of oil maintenance they have had. What I do know is that they weren't abused... I've seen abused (oil change-wise) vehicles and it is ugly.
I plan to drive my SSR. Unlike my Corvette, which only sees a few thousand mile a year, I'm not sure what to do.... 3K, 5K, 7K, or when the DIC reaches 10%
Additional thoughts & suggestions?????