Originally posted by Thuundar80530: That would be the case if there weren't such things as temperature extremes. Ever see dino oil at -20F? You may as well not have any oil in your engine at all. You can't honestly say that doesn't affect the wear on your engine. Synthetics (and some blends) will flow very well at -20 and below...that is just one of the many benefits. In one year, I spend $66 on oil and filters (2 filters, 7 qts oil)...and that's 24k miles. Change your oil every 3k, and you'll go through 7 additional oil changes (42 qts oil, 7 filters) for a total of around $84. Then add the price of labor for each change. I change my own oil, and my time is worth something. Yours may not...that's for you to decide.
I'm not sure which kind of synthetic you are using, so it's hard to make a comparison but lets use absurdly short intervals for comparison sake and say that every 3k for dino and every 5k for Mobil 1. I drive 40k per year on average and my vehicle uses 5 quarts of oil.
Synthetic (Mobile 1) 5 quarts of oil on sale at 3.75/qt......18.75 Filter: Mobile 1 filter................11.99 1 Oil change...........................~30.00 8 oil changes per year................$240.00
Dino (Mobile 0) 5 quarts of oil on sale..................4.99 Motorcraft Filter........................3.99 1 oil change.............................9.00 13 oil changes per year................$117.00
Now lets try something more realisitic with 6000 mile changes on the dino oil and in your example 12k intervals with mobile 1 (or whatever you use)
Dino=7 changes per year.......63.00 Syn=3.3 changes per year......100.00
Quote: Now tell me.....How is dino oil cheaper?
Any questions? Or would you like to manipulate the numbers again?
"If you are flammable and have legs, you are never blocking a fire exit"
-Mitch Hedberg
