Need your suggestions for changing the engine oil.. Currently am using Bajaj DTSi engine oil, which is mineral.Now i have to change to Motul 5100 which is semi synthetic. Do I need to do a engine flush before going to semi synthetic or just drain the old and pour the new one..My friend suggested to use a cheap semi synthetic first for 50-100 kms and then put the motul 5100. In that case which one is the cheap semi synthetic oil available. Any quick help really appreciated
Cheers,
Sam





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