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I was thinking on doing an oil change in my truck with synthetic motor oil.
Has anyone really noticed a difference on the way it runs and gas mileage?
I understand the pros and cons of both,but really---is it that much better for the price?

be careful! syn. if used in an older high mileage engine, can induse oil consumption. It is a thinner oil, and makes the internals of the engine sliker, and thus more oil can get by the rings on the pistons and down thru the seals on the valve stems.

Like what Mastevt make sure that your engine is able to use that oil one way to check that is to check the owners manual or call a place where they do oil changes and they should tell you and from what ive noticed it does make a difference and it is worth the extra money.

I've been using Mobli 1 Synsthetic for 11 years. I started with using it with 1995 Toyota Tacoma. Sometime in November of 1998 I was on my way home from deer hunting, and my head gasket blew, but I didn't know it, until I got home. My truck was towed to Toyota I still had a warrenty, a week later I went to pick up my truck, the service manager asked me what oil I used, and told him Mobil 1, he said that my pistons/rods looked like brand new, that put a smile on my face knowing that Mobil 1 did it's job, still using it today in my 2005 Toyota Tacoma

I am using Mobil 1 Syn in 3 vehicles. A 91 Ford with 200k a 96 Explorer with 90k and a 2000 Silverado with 135k. You can pay more for oil but its hard to beat the Mobil 1 Syn. None of the 3 leak oil and none of the 3 burn oil. The 96 and the 200 were bought used and started on Syns at 60k and 50k. The 91 was bought new and was started on synthetics at 130k. No problems and I would reccomend to anyone.

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I am using Mobil 1 Syn in 3 vehicles.

Same here! Since day one. 1988 Tahoe Blazer 4.3, 2000 Dodge Ram 318ci and 2003 Toyota TRD

Product Description

Mobil 1 5W-30 is a high performance fully synthetic engine oil designed to exceed the industry's toughest standards and outperform all conventional oils.. Mobil 1 5W-30 is engineered to help keep your engine running like new and extend engine life. Mobil 1 technology has been selected as original equipment by leading car builders such as, Chevrolet Corvette, Cadillac, Mercedes Benz AMG, Porsche, Dodge Viper, and Dodge Ram SRT 10.

I have had great luck with Amzoil synthetic oil in my trucks and minivan. After switching over I got 2-3 mpg better. In fact, I'll be switching to the Amzoil transmission fluid tomorrow in my Ranger 4x4.

As far as switching to a synthetic oil, it will not hurt the engine by no means. But say you have 150,000 miles on the engineor 5,000 it will not cause nothing but if you have an oil leak, even it it only drips once per day, the synthetic will make the leak worse as the particles in the oil break up. So no there will be no problem caused but it will bring up existing that you didn't know about. Hope that helps.
Brandon

Owning a parts store i here my fair share but for the record all oils are going to be synthetic or semi-synthetic eventually. the ones that wont will be the house brands, they will keep a non syntec. the best thing is to put in a qt of lucas oil stabalizer with every oil change for example if your vehicle takes 5qts put in 4 and 1 of the lucas. and lucas is so good that when you change your oil the next time you can still feel the lucas in the oil it will not break down.

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As far as switching to a synthetic oil, it will not hurt the engine by no means. But say you have 150,000 miles on the engine or 5,000 it will not cause nothing but if you have an oil leak, even it it only drips once per day, the synthetic will make the leak worse as the particles in the oil break up. So no there will be no problem caused but it will bring up existing that you didn't know about. Hope that helps.
Brandon

exactly! some people believe synthetic oils cause oil leaks. wrong! it only shows more of existing leaks. you just couldnt tell they were there from the conventional oil gumming up the leak. i would change first after 1500 miles instead of 3000 then after that at 3000 intervals. it may not be necessary but i think the snythetics break up a lot of the gummed up chit in your engine so i believe its best to get it out quickly.

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wrong. do you really think your 5$$ oil stabilizer additive is going to help your oil??? if it really does what it claims then manufactures would put it in the oil to begin with. your cheap additive isnt going to do chit. they spend millions of $$$$ in researching this stuff. they put in there what is the best for what they believe.

Mobil 1 technology has been selected as original equipment by leading car builders such as, Chevrolet Corvette, Cadillac, Mercedes Benz AMG, Porsche, Dodge Viper, and Dodge Ram SRT 10.

Mobil 1 is also the only group IV synthetic oil , castrol and all the rest are group III.

bassicly it means is made out of a higher quality base stock..

Sythetic 5-30 is in NO WAY any thinnner or thicker then 5-30 dino oil... dino oil degrades alot faster and alot of the additives in the oil + the grade of the oil is pretty much gone at 3000 miles. Synthetic has the ability to hold the grade longer over harsher conditions and over a longer mileage frame.

Looks like its Mobil1 from here on out.Thanks guys for the info,very much appreciated:)

just FYI i have 111,000 miles on my 99 Z71. always had valvoline regular oil in it for its entire life. switched to mobil1 a week and a half ago and no problems yet.