ramblinboy Report post Posted June 23, 2011 We just got home from a Pacific NW tour. We ended up in Safeway gas stations a lot because of our saver card. I found that I had a lot of rattle from the Ford V10 engine with their regular gas. The last fill I had was COSTCO gas and the rattle is completely gone. Anyone notice this too? Share this post Link to post Share on other sites
MikeCanter Report post Posted June 23, 2011 That is interesting because that engine has two knock sensors (accelerometers) that monitor for that rattle or valve knock and should retard the ignition timing to stop it. That must have been some real bad gasoline that the ECU could not adjust for. Share this post Link to post Share on other sites
ramblinboy Report post Posted June 26, 2011 Thanks Mike good to know! Have you or anyone else tried Octane boosters to avoid this kind of situation? Share this post Link to post Share on other sites
