Best product I have found is called tec 2000. It is a import from Germany . Been over there for 20 years , new to US hard to find.Only can get at car dealerships . It lubes while it works i paid 29.99 and I now get 25 % overall better compresion ratio . They also have a fuel injector cleaner that is awsome, no machine required to use.Again only at car dealership.I paid 29.99. You only have to use it every 10k miles.I found a web site called
tec2000usa.com Check it out .If you can't find it email me. I will ask my local Dealership to find out how to get your dealer hooked up.I used to have pinging NO MORE and better fuel economy.
how much did your fuel economy improve? what was the methodology of finding the figures before/after? Who performed your compression test before/after and what were the figures? Did you perform a leakdown test at the same time? if so what were the results? Why are you required to use it every 10k miles?