I've a 2007 grande Punto petrol, 60k mileage. Two years back, immediately after getting a full service, my car started making a strange noise when accelerating. Noise used to disappear at higher speeds and get considerably worse in hot weather.
I spoke with other garages and suspected it had something to do with the oil change, new oil was probably too thin? We got the new engine oil drained out (shell 5w30) and replaced by 5w40 Granville fully synthetic. The manual said 5w40, so made sense to try. The noise immediately reduced by 90% but still stayed unfortunately.
A year later I got my cambelt and water pump changed and the noise disappeared fully. Didn't get the noise for the next 10 months at all.
Last week it has come back again unfortunately. It gets worse in hot weather, or after I've been driving for a while.
I'm wondering if I should try a different oil this time or is this being caused by something different (e.g. why would cambelt change fix the issue and why would it happen again after 10 months)? The car makes only 2k mileage per year so don't think it needs another cambelt change. Any thoughts will be much appreciated.
I spoke with other garages and suspected it had something to do with the oil change, new oil was probably too thin? We got the new engine oil drained out (shell 5w30) and replaced by 5w40 Granville fully synthetic. The manual said 5w40, so made sense to try. The noise immediately reduced by 90% but still stayed unfortunately.
A year later I got my cambelt and water pump changed and the noise disappeared fully. Didn't get the noise for the next 10 months at all.
Last week it has come back again unfortunately. It gets worse in hot weather, or after I've been driving for a while.
I'm wondering if I should try a different oil this time or is this being caused by something different (e.g. why would cambelt change fix the issue and why would it happen again after 10 months)? The car makes only 2k mileage per year so don't think it needs another cambelt change. Any thoughts will be much appreciated.