Engine Rejuvenators

So I need to get schooled on a tune-up/maintainance procedure.
I also went to auto zone and there is a who host of cleaners, special oil additives and lubricants, and rejuvenator products. I am a bit overwhelmed and when I do searches on these products you get half who say its all snake oil and half say they work.
So I am changing the drive belts, oil, and spark plugs this weekend. What else should I do to keep the engine in top shape? Any additives beside techron that could help keep cylinders tight and compression up?
Thanks
My idler and tensioner bearings were used up at 90k.
90k is nothing to worry about if your car has been treated right. I wouldn't use and I don't recommend any additives in the crankcase oil. The only thing that goes in my car is an occasional bottle of Techron and I am not sure that is worth doing because I use only Chevron.
There is no such thing as a mechanic in a can.
Last edited by onlyavette; Jun 1, 2013 at 11:23 PM.

These engines were designed to last 200k miles. No oil or engine additives needed. Actually they can do more harm than good in some cases. All that should go in to your crankcase is clean good-quality synthetic oil. That's it!

My concern is that the first owner of the car did not take care of the car. My concern is that interior of the engine is full of carbon build up. I am concerned that the car could be running rich and the unburned gas could be contributing to carbon and contaminant build up. I am concerned that over time the piston slap issue has create a situation where compression is not up to factory spec and there might be leaks into the crankcase.
There is nothing to justify most, if any, of these concerns, I am just ****.

So is there anyway steps I can take to ensure the interior of the engine is running as good as it can, and is as clean as it can be, for its own individual condition? Barring any trips to a service tech...
EDIT so the trolls dont get feed: seafoam is getting done today.
Last edited by NotAnExpert; Jun 2, 2013 at 10:17 AM.
Good luck.
Last edited by onlyavette; Jun 2, 2013 at 10:24 AM.
The Best of Corvette for Corvette Enthusiasts
My concern is that the first owner of the car did not take care of the car. My concern is that interior of the engine is full of carbon build up. I am concerned that the car could be running rich and the unburned gas could be contributing to carbon and contaminant build up. I am concerned that over time the piston slap issue has create a situation where compression is not up to factory spec and there might be leaks into the crankcase.
QUOTE]
Remove a valve cover and see how clean it is inside.
If you think it may be running rich have it dyno tuned and adjusted. Then you will know what it is doing.
If you think compression may not be good do a compression test and a leak down test. Then you will know.
To sit and worry about it and do nothing to find out is pointless and accomplishes nothing. Get it done.
My concern is that the first owner of the car did not take care of the car. My concern is that interior of the engine is full of carbon build up. I am concerned that the car could be running rich and the unburned gas could be contributing to carbon and contaminant build up. I am concerned that over time the piston slap issue has create a situation where compression is not up to factory spec and there might be leaks into the crankcase.
There is nothing to justify most, if any, of these concerns, I am just ****.

So is there anyway steps I can take to ensure the interior of the engine is running as good as it can, and is as clean as it can be, for its own individual condition? Barring any trips to a service tech...
EDIT so the trolls dont get feed: seafoam is getting done today.

Essentially I am looking for objective information on engine additives that can improve internal conditions temporarily until a mechanical solution can be obtained.
This would include cleaners and sealer additives, and oil additives. After aboit two weeks of searching I found an old post on CF that said lucas oil stabiliZers aerate the oil and that is bad.
So thats essentially what I am looking for. If you know a certain additive helps, then why does it help and whats thw basic science behind it. If you want to share a negative experience then please include some sort of objective more scientific reason why an additive is bad.
Products I have looked at are cleaners and crank case adds that promise to help improve internal sealing and compartmental functions. I do understand a mechanical solution is ultimate, but if you cannot afford to put ur DD into the shop for a week or two this tends to delay the mechanical solutions.
Helpful note if your strongly anti adds, then this post is only going to serve as a troll post...and thats not my intent.
Last edited by printmanjackson; Jun 2, 2013 at 05:32 PM.








