I have a 1999 civic lx manual with all stock internals and now 124k miles. When I bought the car a few months ago it had low compression.
Original cylinders readings (note supposed to be 180psi from factory)
1 150
2 135
3 135
4 150
Following this I added this product to the oil upon suggestion from a friend
My subsequent readings have been 150-155 across all cylinders. I've used this product for 3k miles now with consistent results in compression. My question is how much relative FE am I missing out on now and is this is a long-term solution?
PS i'm getting my Scangauge in the mail today but so far my best tank has been 40.5 mpg just being really light on the gas at 60mph.