synthetic oils - yes or no?

[Puffnstuff]

Well I've learned from my own personal experience that the higher detergent content of m1 will wash away old deposits in an older engine exposing weak spots in the gasket which will leak once cleaned. I will not swap from dino to synthetic in an older car again unless the engine was just completely rebuilt. On all of my new cars I go to m1 on the first oil change and that's where I stay until I get rid of them. You can get 5 quart jugs of m1 at walmart right now for $23.97 all day long. The last time I bought m1 at advance auto I paid $19.97 for the same 5qt jug and that was in December. For the small price difference I'll run synthetic lubricants in my vehicles. I also use the trd ptr14-00000-07 filter on my truck to give it more filtering. If you shop around online you can get a case of regular toyota filters for around $40.

[Pistolero]

I've been running Mobil 1 in my '03 since it's first oil change almost 4 years ago. When I first started buying it, it was $17.88 for a five qt. jug at WalMart. Now, it's almost $25. Still, I figure that's cheap insurance for a quality oil that I know will perform well. If I can't afford to spend $30 or $35 for oil every 5 or 6K miles to keep a $28K truck running and in good shape, I have bigger problems to consider.

[2002toytundra]

I have used Mobil 1 since about 10k miles and have loved it, I even went with the syn trans fluid and rear diff oil. Seems to run better and shift smoother, use the Mobil1 filter too. It is cheap insurance, I had a 1997 Trans Am that I used synthetic, the chick who bought it from me totaled it but the motor and all was in great shape still.

[Infiltrator]

wow, thanks hog that 10w-30 mobile oil is just the thing for me. sounds great!

[HOGWILD]

Originally Posted by ddvk

Mobil 1 HM oil isn't SM rated.

Now coming to HM oils, they have improved additive packages and seal sweelers, that expland the seals. It is good if there are leaks from oil pan seals, rear seals etc.

I have used it on my other vehicle to fix a small seepage from the rear seal and it kind of reduced the seapage.

But Mobil1 HM is not any great than dino oil like Pennzoil HM (they were the first to even come out with HM oils) etc. which incidently is SM rated.

I found i guess what i needed and my vehicle does not require a SM rating since it's a 93! http://www.aa1car.com/library/API_ratings.pdf

[USAFTUNDRA]

Myths

According to mobil oil you can use it in older cars.

[LifeTech]

Originally Posted by Puffnstuff

Well I've learned from my own personal experience that the higher detergent content of m1 will wash away old deposits in an older engine exposing weak spots in the gasket which will leak once cleaned. I will not swap from dino to synthetic in an older car again unless the engine was just completely rebuilt. On all of my new cars I go to m1 on the first oil change and that's where I stay until I get rid of them. You can get 5 quart jugs of m1 at walmart right now for $23.97 all day long. The last time I bought m1 at advance auto I paid $19.97 for the same 5qt jug and that was in December. For the small price difference I'll run synthetic lubricants in my vehicles. I also use the trd ptr14-00000-07 filter on my truck to give it more filtering. If you shop around online you can get a case of regular toyota filters for around $40.

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LT