Just curious to see what you all add besides oil when changing your oil.

I use Marvel Mystery every other oil change...your turn!

 

It also depends a lot on the the type of vehicle and mileage. One I would recommend for just about any vehicle at any mileage is Redline WaterWetter for the coolant, though Nology also makes a similar type fluid widely available here in Mexico. Techron is also good but with U.S. gas, unlike where I live, you do not need to use it as often north of the border and with newer vehicles.

 

I usually screw on a new filter with it.

 

I use Techron

 

Use Chevron gas and Techron comes with it.

 

The concentrated Techron is what I use down here since only nationalized gas, and gets the job done really quickly.

Sometimes, I use Restore in my oil to get the compression up. I have been using a product called Oil Extreme for a good deal of time and the oil seems to hold up better (I used 0W40 Mobil 1) over time. There are some good friction modifiers out there, but if you don´t race or do a lot of towing, you don´t need them.

Avoid Octane Boosters in a bottle...I have had very minimal effect with those...even guys who use them and adjusted their timing at my track found virtually no different in time.

A couple of other things I like are Mobil 1 ATF for the PSF fluid and Ford Heavy Duty (in some places High Performance) brake fluid, quite a bargain in price for the boiling points, and easily available.

 

Boosting octane is not just a matter of track times. It is also sometimes just a matter of avoiding piston damage, especially with engines that don't have knock sensors.

 

I actually know of a few kiddies that rammed about 5 bottles (like those little NOS octane booster bottles you can find at WalMart) and wound up with exactly that.