My Dad has a 91 dodge grand caravan that he bought brand new and has been the family truckster since then. We have gone on many roadtrips and that thing has been to **** and back. During the winter it takes the whole tribe up to the ski hill every weekend. There has been very little maintnance done on this car my dad just doesn't really care Back when I was younger and didn't know a thing about cars he went 7,000-10,000 miles on an oil with just whatever oil was the cheapest. For about the last 3 years I've been doing oil changes for him becuase I got my license and started learning about cars. But before then oil changes were not a priority. Now this car is twelve years old with 128K and about a year ago we were told that the engine was on its last legs(oil pressure was low). I put 20w-50 weight oil in to try and bring the oil pressure up and we've been running for over a year like that. We have bets between me and all my brothers as to how long the van is going to last. About a year ago I predicted 132,322(hey you gotta be exact) I was gone working for the summer and of course the oil didn't get changed, he put about 5000 on castrol GTX. When I went to change it I noticed lots of sparkles in the oil. Later when I poured the used oil out at the recycle place I saw lots of little pieces of metal about the size of sand So what do you guys think? Is it terminal? By the way its the 3.3 motor and it uses about a quart every 2k. Dads theory is to run this van until it blows up and then worry about it later. I'll keep you guys posted on how long a severly abused motor can keep going with the wrong weight oil in it.