Are any of them a good idea, to help gas milege or prolong eng. life?

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White 97 XLT SC 4.6, 4X4, 3.55ls, tow pkg, long bed, Rhino liner, Owens running boards

 

No. Plus my owners manual states they will void the engine warranty.

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'97 XLT Reg. Cab, 4.2V6, 5spd, Superchipped, K&N Air Filter, Lund Deflector, Dash Mat, MagnaFlow Muffler, Hellwig Rear Sway Bar, Edelbrock Shocks, Duraliner, Extang Saber Tonneau, Bell-Tech 2" Rear Drop, Amer. Rac. Atlas Wheels Clad in 275/60/17 Eagle GTII. Likes straightaways, loves twisties.

 

View this
http://www.oil-tech.com/aftrmrkt.htm

You tell me???????

Stick with top quality oil and you will be fine. Better yet go synthetic!

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Lube-Direct

 

Good link msparks! I agree...oil additives are not needed.

If you use a quality motor oil and make sure to change the oil and filter on a regular basis...these additives are not needed. I was able to get almost 185,000 miles out of a 1986 Mazda 626..with 3,000 oil/filter changes....and I never added anything to the oil. The engine was still running like new the day I traded it in (which I regret doing).

For example..I read the the makers of SLICK 50 were ordered by the Federal government to remove the claim of "50,000 miles" from the packaging...because this claim was false.

I recently switched to Synthetic oil for the best protection in my new 2000. The higher cost is worth it to me...and it will not cause the sludge that oil additives can cause.

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2000 F-150 XLT, 4x2, 5.4L Supercab, Styleside, Black with silver two-tone, 3.55, class III towing package with heavy duty cooling package, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, Pendaliner bedliner, K&N air filter, rubberized undercoating, cabin filtration system, Bugflector II, 5W-30 Mobil 1, engine build 10/4/99

 

Check out http://www.mustangworks.com/cgi-bin/...Treatment.html

They have very good articles on oil and oil treatment.

 

Bent6-- great article!!

I found the following parts of the article very interesting:

"oil additives: They can cause oil starvation. This is particularly true in the area of piston rings, where there is a critical need for adequate oil flow. In practically all of the reports and studies on oil additives, and particularly those involving suspended solids like PTFE, this has been reported as a major area of engine damage."

"Not all engine oil additives are as potentially harmful as some of those we have described here. However, the best that can be said of those that have not proved to be harmful is that they haven't been proved to offer any real benefits, either. In some cases, introducing an additive with a compatible package of components to your oil in the right proportion and at the right time can conceivably extend the life of your oil. However, in every case we have studied it proves out that it would actually have been cheaper to simply change the engine oil instead."

 

Dustoff,
Also check out the oil article. Its on the same part of the Mustangworks sight. It is also a good sight for msparks to check out as it shows Amsoil in a very positive light.

 

I will...thanks again for the info!

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2000 F-150 XLT, 4x2, 5.4L Supercab, Styleside, Black with silver two-tone, 3.55, class III towing package with heavy duty cooling package, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, Pendaliner bedliner, K&N air filter, rubberized undercoating, cabin filtration system, Bugflector II, 5W-30 Mobil 1, engine build 10/4/99