Hi, I have a used Toyota Corolla 2007 that has engine problems
I bought this for $8000 in Dec 2012 and did not realize the previous owner was using synthetic oil. I used the regular oil and changed every 3 mins. At one point I started seeing lot of smoke and the oil was burning quickly (like in a month for 300 miles). The oil change guy recommended to use synthetic oil and that should remove all the sludge. It’s been a year I am using the synthetic oil and I still have the sludge issues.
I took the car to the mechanic today and he is saying the piston rings could have worn out and asking to rebuild the engine and that would cost $2800 including the taxes. My wife will be using this car to drop and pick up the kids from school. So I dont want to take any risks. Should I go ahead and rebuild the engine? Any other suggestions?