I just changed my oil and put in Mobil 1 synthetic. I noticed an immediate difference. The engine was quieter and the idle was smoother. The engine also seemed to run smoother than when I had the regular oil. I was just wondering about anyone elses experience with Mobil 1 or other synthetic oils. Did you experience the same thing I did? I know there are a lot of posts about this, but they all seem pretty old, so I figured I open up a new discussion.

 

I run Mobil 1 5-30 synthetic in my rigs, makes a big difference. One thing i noticed is if you got any oil leaks they will be worse with synthetic, lol!

 

I never noticed anything when i switched over..

 

I used to run synthetic because i liked throwing money away LOL Seriously it's just one of those things that will always be debated and different people will have different experiences. I was told by a couple of mechnanics that i trust not to run it in regular street vehicles and when i noticed that the thicker regular oil would slow a leak i was sold

 

Manufacturers' ChoiceMobil 1® is standard equipment in some of the world’s finest production vehicles. Car manufacturers rely on Mobil 1 motor oil for the first oil in a new car, otherwise known as “factory fill.”Mobil 1 Chosen as Factory Fill for all 2008 Cadillacs[/b] - Mobil 1 has been selected by Cadillac as the factory fill motor oil for its 2008 Cadillac Escalade and DTS models, making Mobil 1 standard equipment in every new 2008 Cadillac vehicle that rolls off of the production line.

Welcome to the Family - The Acura RDX joins the roll call of performance vehicles filled with Mobil 1 at the factory. Read why Mobil 1 is perfect for the turbocharged RDX engine, and how it ranked against competitive motor oils when tested against Acura's tough new standard for motor oil.

Mobil 1 is factory fill in:
[ul][*]Acura RDX[*]Aston Martin[*]All Bentley Vehicles[*]All Cadillac Vehicles[*]Chevrolet Corvette C6 and Z06[*]Chevrolet TrailBlazer SS[*]Chrysler 300C SRT-8[*]Cobalt SS S/C Coupe[*]Dodge Caliber SRT-4, Charger SRT-8, and Magnum SRT-8[*]Jeep Cherokee SRT-8[*]Mercedes-Benz AMG Vehicles[*]Mercedes SLR[*]Mitsubishi Evolution[*]Pontiac Solstice GXP[*]All Porsche Vehicles[*]Saturn Ion Red Line and Saturn Sky Red Line[*]Viper SRT-10
[/ul]High praise that speaks louder than words.