I installed this on
Mitsubishi Evolution

Review
I now spend less on maintenance of my ride. I do track over the borders, and using better products would be essential for my ride. I had once burned my wallet when my gears went berserk after aggressive tracking. My mechanic offered me to get this Liqui Moly Engine Internal Preservative. What I noticed was I now shift my gears much more smoothly, and regular maintenance was not much needed. What my mechanic said was that this product helps to ease out the friction while gears are being shifted.

What I like
It takes care of my gears well.

What I do not like
Some may find it costly.