AoA, Respected members,I am using 5w-40 shell ultra in my corolla 2007, 81000 km driven, before this engine oil i was using caltex 5w-40. I have noticed that there is slightly oil leakage, altough after 500 km of the oil change, there is no sign of oil reduction on dipstick. The other problem is engine noise has been increased slightly.
Waiting 4 your helpfull advices,suggestion.
Is it leaking regularly or on paticular time e.g in early morning as car had been parked for several hours?Plz provide details.
I was experianceing the same problem in my 2010 corolla altis 250000km driven,I tried everything from changeing bolt applying different seals etc,then finally changed the oil pan now problem is solved.
it leaks after drive of around 1 hour from head gasket portion but the leak is not excess that it trickles on floor. I have been using 5w-4o for around 3 years, there is no oil consumption but the back of engine is too messy.
If Oil leak is not in excess than it is a Seepage,their could be several reasons for leak from Head Gasket e.g Blown Head Gasket but in your case car is only driven 81,000 kms which is very rare in this mileage,It might be Leaking from Valve cover,their could be several reasons better visit a 3s dealer or good mechanic.