First time in the forum got a few Qs..

[sonsw87]

I have a 2007 x5 (110000 km/68000 miles)and I just got my water pump, thermostat and the valve cover gasket changed cause my engine got over heated. I heard this was a pretty common thing.. anyways after the repair driving felt lil different for some reason. Cant really get my finger on it but feels like im not getting enough HP or something. When I step on it it feels like its dragging a bit and it jerks sometimes. Also when in idle the car shakes like every 1-2 mins.. not a big shake but just a lil. And lastly I been using 89 octane lvl gas cause of crazy gas price up here Canada.. is it ok to continue use 89 or should I start using 91 (too late to change now?).. Sorry for all the noobie Qs I really dont know much about cars.

Thanks!

[H F]

I have a 2007 x5 (110000 km/68000 miles)and I just got my water pump, thermostat and the valve cover gasket changed cause my engine got over heated. I heard this was a pretty common thing.. anyways after the repair driving felt lil different for some reason. Cant really get my finger on it but feels like im not getting enough HP or something. When I step on it it feels like its dragging a bit and it jerks sometimes. Also when in idle the car shakes like every 1-2 mins.. not a big shake but just a lil. And lastly I been using 89 octane lvl gas cause of crazy gas price up here Canada.. is it ok to continue use 89 or should I start using 91 (too late to change now?).. Sorry for all the noobie Qs I really dont know much about cars.

Thanks! First of all ,, welcome.... If I were you I wouldn't use 98 octane.. I only use 91 on my car. These cars are designed to run on premium fuel.