I have heard that I should use Lucas oil treatment every other oil change. Good Bad no difference?? Just curious

 

Oil treatments are essentially saying you don't have very good oil and you need something more. That isn't the case with the oils of today. None of them are that insufficicent that you need to treat them.
The other thing that happens is a treatment can mess with the chemistry of your oil, particularly the additive package. No way to really know how it affects it without periodically sending in samples.

Will it cause harm? Probably not. Many use it but is it really necessary???

 

Everybody swears by Lucas, I think it's crap it builds up like tar inside your engine. I think if you ran it long enough you could plug up all your oil journals.

 

i am also not a fan of oil treatments/additives. if all oils where the same then i could see someone coming out with workable additives but all oils are not the same so having a product that can work on all seams unlikely

today's oils, especially synthetics, are quite good. remember the 3000 mile oil change interval? now some are as high as 10K mile. this is a result both engine AND oil improvements.

stick with a good oil, fallow the recommended oil changes and your engine will last just as long, if not longer, then with the additive

 

Do not use any kind of additives in your engine oil.
Use a quality synthetic like Mobil1 5W40.

 

^^ i will agree with the above.
short little first hand story :

built a 351W backed with a t5 and swapped it into a toyota pickup. shop i worked for had full ride sponsor from lucas so all the products were free to me. went ahead and added the correct amount of "oil stabilizer" into the motor and took her out. the truck ran the entire desert season with little to no issue until the engine blew at the end of the season. ripped the engine down to each individual piece and low and behold... lucas additive was settled like molasses in the bottom of the oil pan. pulled off the oil pickup tube, looked like molasses in the screen... no darn way will an oil additive ever touch another engine of mine.