Replaced my B230FT Volvo 4 cylinder Turbo a little over 29,000 miles ago with a Factory remanufactured unit. The engine since day one has been fed Mobil One 10W30 with zero oil usage. About eight thousand miles ago after my one year unlimited mileage warranty ran out I decided to add the recommended maintenance dose of Auto-Rx. At first I didn't notice anything different but over the last week I noticed a major change in the idle. Before the addition of the Auto-Rx my idle ran in the 900 - 950 rpm range AC on or off. It was either Friday or Saturday I pulled up to a traffic light and thought the engine had stalled.
It was so quiet and smooth I didn't think it was running. I looked at my Tach and the engine was idling in the 650 to 700 RPM range. It was probably doing this sooner but I play the stereo at elevated levels most of the time, and never noticed it before. My OCI is 4500 to 5000 miles so I am about 3500 miles into the second oil change using the Auto-Rx maintenance dosage.
[ October 18, 2004, 11:38 AM: Message edited by: ALS ]
It was so quiet and smooth I didn't think it was running. I looked at my Tach and the engine was idling in the 650 to 700 RPM range. It was probably doing this sooner but I play the stereo at elevated levels most of the time, and never noticed it before. My OCI is 4500 to 5000 miles so I am about 3500 miles into the second oil change using the Auto-Rx maintenance dosage.
[ October 18, 2004, 11:38 AM: Message edited by: ALS ]