i am just want to know about some of my problems. i have overhaul my engine (just rings and gasket) but the problem is immediate smoke start after overhaul. and the problem was not solved. my mechanic said that the smoke and oil burning will be last for next 1000 KM and then it will be solved itself. so do u think he is telling the truth or it is not right? what u say. he also told me that after 1000 KM the oil should be change and the engine will be ok then, and will not consumed oil and smoke anymore. also tell me that do u experience any smoke after rings and gasket change? or this is just the case with me? also someone told me that the engine should be break in with a mineral oil and one should not use any synthetic oil during the initial break in period because the synthetic stuff is much slippery than the mineral one, because i have refilled with synthetic after ring change therefore after the friend advice i have changed to mineral after 317KM driven so the smoke is still given be the tailpipe and the oil is still consuming. so do u think i should go for valve seal change also with piston and piston rings change or i should wait for 1000 KM drive? please guide me. Thank You.