Just wondered if anyone else here has experienced any detonation/pinging in their 4.7 I-force while under load.
It is fine until I stomp the gas to pass somebody on the interstate and then it starts pinging like crazy.
I use unleaded plus (89) and have had all my oil changes and my 15K and 30K service done at the dealership (30K service cost $400
).
I had told them to check on the issue back then and they said they couldn't replicate the problem-but I seem to have no problem
Any advice??
Thanks