I changed the oil in my daughter's car,89 GP with a 2.8L and @120k,about 3 weeks ago using GC,first time in this car. She says she checked it regularly,that's debateable.Well she was on her way over here the other day and the car quits,she has it towed to a reputable mechanic.I hear from her and she says that the engine siezed,the mechanic poured in 3 and half quarts before it registered on the stick,4.5 qt sump..So the car is toast.My question,could the GC have done a major cleaning in a short time,which in turned made it leak and leak alot and seeing the level wasn't checked



