I’ve had the musta for a year and a half now, and to finally got around to changing spark plugs. It was necessary.
I have no idea how many miles those were in for, but I know the car runs smoother with new ones.
While I was in there I ran a compression test. The car has 170+k miles, and before I put more money into it I wanted to know how it was. Passed with flying colors! Had my 4 year old help by standing in front watching the gauge and telling me when it hit the green part of the gauge. We were both thrilled.
New wires on their way to round out the job. Next up: new radiator maybe?