gmoran1469

Credential is a noun. You working in an "oil shop" doesn't mean much anyways. Plenty of people work plenty of places and don't know jack. Running natural oil in your stang won't hurt it, it just won't help it and the differential rarely needs to be serviced unless damaged.

As was stated, synthetic isn't that much more expensive if you do it yourself and doing it yourself is incredibly easy. Don't top off the brake fluid until AFTER you change the pads otherwise you will probably overfill the reservoir. As the pad wears it takes more fluid to push the piston further out until the pad makes contact. If you top up before you put fresh pads on then the piston won't go out as far and you will push the fluid back into the reservoir.

My advice, invest in a set of plastic ramps, 2 jack stands, a 1-man brake bleed kit with the vacuum pump, an oil filter wrench, an oil catch pan, and a 5-gallon bucket. You'll go through 4-5 oil changes before you fill that 5-gallon bucket up with used oil and it doesn't cost much to dispose of it properly. You are gonna spend $100-$150 on it but it's well worth the investment as you will pay for it by doing your own maintenance. I'm not a mechanic and I swapped my tranny and diff fluid to synthetic on my own with the items listed above and some hand tools to take the diff cover off.