I bought this oil to replace old oil in my daughter's 2009 Chevrolet Suburban, 3 days later( approximately 75 miles ). She called me to come help her because she was broke down at the end of the road I live on. I soon discovered the piston sticking out the engine block. Engine oil life is still at 100%. Very DISSATISFIED

My 2007 Corvette with 60,000 miles maintains 28 psi at 70 mph 1750 rpm, oil temperature of 220 degrees. This hasn't changed since I've owned it for two years, considering changing to a higher weight or different oil manufacturer. Cold oil pressure can climb to 80 psi, when hot pressure falls off rapidly. Mobile 1 suggested to keep using 5-30, or maybe 0-30, but not 0-40. Why? I feel my oil concerns are due to thermal breakdown. The only way to increase oil pressure when hot is to use a higher weight oil, or a better grade oil that resist the effects of heat. Just my 2 cents worth...

When I was much younger and running hot rods ('66 GTO and a '68 Mustang fastback Bullitt clone) I used GTX 20-50 and it worked ok in those cars at that time. As I have gotten older and, while my taste for fast cars hasn't changed, I now drive something a bit more refined, a V-12 Mercedes SL600 and a smaller V-6 Mercedes SLK320 Sport and I use strictly Mobil 1 5W-30 in both. Both cars run so smooth that at idle , and aside from the blurble of the exhaust system, you cannot tell they are even running. Mobil 1 5W-30 is the factory recommended oil for the SKL320 according to the sticker under the hood. The SL600 didn't have a recommended oil but I use the same 5W-30 in it as well. We also have a Ford Expedition with a 5.4 liter Triton V-8 and I figured that if Mobil 1 is recommended for a Mercedes, it's more than good enough for the Ford, too. I do all the maintenance on all our vehicles, except for any major repairs, and I change the oil and filter every 3,000 miles even though Mercedes recommends oil and filter changes every 10,000 miles. If you have ever owned a Mercedes and had to have major repairs performed at the dealership you know it can b e a rather spendy experience, so I would rather spend a little extra money on oil changes now than on major engine repairs in the future. Mobil, I absolutely love your product!

The oil pump went out in my 06 C6 corvette. I always use 5w30 Mobil 1 extended. Long story short, there weren't any shavings or glitter in my oil pan. I just got the car running again and it runs great. No bearing damage no crazy sounds. Thanks for oil that may have prevented a $7500 rebuild.

I have a 2001 GMC Yukon XL with 169,000 miles on it. It has been in the family it's entire life and has used only Mobil 1 Full Synthetic. It has never had any engine problems and the engine runs just as good as new. Never will use anything else other than Mobil 1.

Been a fan of a competitor for some time, availability led me to switching to mobile 1. Right away I've noticed smoother operation, which is debatable, but what isn't is the better fuel economy our vehicles have picked up. I'd swear our vehicles have more power and even running the air conditioning we get a 1-2 mpg improvement. So far, I'm very impressed!

I own 3 vehicles. A 1998 Chevy K1500 5.7 Vortec, a 2018 Ford Mustang 2.3 EcoBoost, and a 2016 GMC Sierra Denali 1500 6.2 Ecotec (0W-20). I’ve tested every major brand of motor oil there is on these vehicles and none of them came close to comparing to Mobil 1! I would highly recommend this product to anyone that feels like they could benefit from a strong and smooth engine!

I've been using mobile 145 years.I like the product

Nascar uses it, so do I.

I have a 94 camaro with 267,000 miles. I have used Mobil 1 in it since the car was new. I replaced the valve cover gaskets last month and the rockers looked new. I will only use Mobil 1 in my other vehicles also.