I bought a premio 2008 recently.previous owner was using havoline 20w50 but it was supposed to get changed at
3000 kms max. I switched to kix 20w50 semi synthetic but now my car at cold start is at very high rmps and vibration in engine for first 10-15 mins even more but after you have deiven it for 30 mins rpm is pretty normal and drops below 1000.
Iam just concerned is this the right oil im using or should i change it ? Remember its odo meter is 260k +
Some one suggested 20w50 is not good for premio switch to 10w 40 fully synthetic from a reputed brand.need expert opinion