Change oil every 20,000 miles on my last 7 Toyotas and Scions,Every 5000 miles i change the mobil 1 fliter. with new one.Always use Mobil 1 oil and Fliters

Best engine protection, have used Mobil 1 in many engines for over 35 years. Makes them last much longer and stay clean on the inside, no gunk build up and REALLY helps starting in sub-zero temps.

I have been using Mobil 1 5w-30 in my Chevrolet S10 for 15 years now. I switched to high mileage when it reached 300,000 miles. The truck now has 548,000 on the original engine and still runs very well.

I own a 2002 Chevy Avalanche and have run Mobil One since the first oil change.Currently I have 438,000 miles on my vechile and it is still the original motor.

I've always used this from the time my car/truck is new, until I sell it. If it's good enough for the big boys, it's good enough for me and all my vehicles.

I used Mobil 1 5w/30 for 12 years and 260,000 miles in my 04 GMC 2500HD. Changed the oil between 6500 and 7000 miles. The engine outlasted the rest of the truck. Enough said.

I own an express oil change I do a lot of oil change and this is the best for my customers they happy and the cars are running like new I keep it clean I love it

I have 2001 Lexus RX300 which my miles its already been 380,000 and my car has excellent performance until now i had been using Mobil 1 5W-30 since the first change oil until now.

When it gets -20 degrees actual air temp here the other synthetic motor oils I've used would allow the engine to squeal a bit on start-up. Not so with Mobil 1 5w-30. I really like that. I have a Chevy Silverado 4.8L.

Have used this product in my last 5 corvettes and can say that in my opinion it is a very good product and does exactly as advertised. I have never entertained the thought of another brand as this product has excelled in my opinion.