gmw photos wrote:
Some current cars come with synthetic as factory fill, and the manufacturer of course recco's using synthetic when it is time to change it.
For Mobil 1 much of and sometimes all of the cost difference between it and conventional oil can be mitagated by watching for it to go on sale at walmart.
Some engine designs benefit, in fact may "need" a very thin oil for small oil passages in the engine. Synthetic can be an advantage on cold startup, in cold weather for an engine like that.
If you really want to know how you oil is doing, take a sample and send it to a lab for testing. I use blackstone lab, but there are others. Blackstone charges $25 for an analysis.
:R
B.S. Light just went on.
BOTH "DINO" and SYNTHETIC oils use the EXACT SAME oil weight RATINGS.
In other words Synthetic oil rated 5W-30 WILL ACT THE SAME as 5W-30 DINO oil.
There is no "magic" in Synthetic oil that will allow it to pass through "smaller" oil passages. If you believe otherwise I can make you a great deal on some Ocean front property in Arizona..
Basically Synthetic oils allow for a bit longer interval between oil changes, costs more too boot. So in the end you STILL pay more for it and change the oil one or two times less during the vehicles life gaining no extra mileage or LIFE of the vehicle.
Synthetics are all about great marketing, appeals to folks who really HOPE to squeeze better mileage out of the vehicle which is what the marketing groups appeal to.
I have one vehicle currently with 200,000 miles on the clock, run it solely on DINO oil and doesn't make any odd noises, doesn't burn oil between changes, in fact gets oil changes at 7,000-8,000 miles.
I am not buying it that Synthetics are that much better.
