um 30 bucks should be donated to them for a change....is this you or just asking a random question..???
well, oil never goes bad.... but the additives do wear out, and sludge does build up.... so nothing is really BAD.... its not ideal, and as long as the oil isn't low you will be fine. Hell, my work van has over 200K miles on it and We just ADD oil now and then. Still runs like a champ, even though its a dodge.
My truck burns oil so I have only officially changed the oil in it once. I just added 4 quarts 3 days ago so it's like an oil change
When I was working on FedEx trucks, we put some kind of Amsoil in it and we were running them 25,000 without a change, every week we would make sure the level was fine and we changed the filter every 5,000. Plus it had a bypass filter we changed every so often.
There will be some oil that drains out from the filter but most of it's in the pan which is below the filter.
Yes, yes it does. I think the valve seals are leaking. I don't drive it much. It's mainly for just driving in the woods or pulling my race car. It burned 4 quarts because I used it hard all weekend to move someone out of a house.
If it was a synthetic oil I would'nt be all that worried about it. People in other threads have said they sent their synthetic oil to labs and the results showed the oil had'nt completely broken down yet and was fine. If that was the TRUTH then I would'nt sweat it, but I change my synthetic every 4,000 or so, which I'm sure most other people do, or even before that.
I change my synthetic oil at 5,000 miles. I've seen Amsoil recommend oil changes after 20,000 miles or something like that. Check their web-site.
Back in the times when engines weren't expected to pass 100k or so, 3k/3mo was pretty much necessary for changes. This was also due to the fact that oils weren't nearly as good as they are today. In these times, even dino oils have great detergent packages, so 5k/6mo is fine. With a full synthetic, 10k+ is easily attainable. Heck, if you read the bobistheoilguy.com boards, you'll see guys running the very oil we're supposed to use (Motorcraft 5w20 synthetic blend,) to 15k, and they still get good results back from their used oil analysis's.
+1 On a modern engine, 9000 miles is a little on the high side, but nothing i would worry about. I think i'm currently at 5000 miles or so, but i'm doing an oil change tomorrow
I don't care what anyone says. You should change your oil on time. It may not hurt much waiting until 9000 mile just one time. But if you do that type of thing enough it will have negative effects. Example: Before the 'Stang, I had a '96 Blazer and my mom had a '97 Blazer. They both had pretty even mileage, but mine ran a hell of a lot better. That is mainly because I changed my oil EVERY 3000 mile and kept up with other maintenance. She would only change her oil every 6000-9000 miles and kept up on MOST other maintenance. My Blazer ran way better and my friend and I lined up mine vs. hers one night. It wasn't pretty.
A lot of other manufacturers recommend long oil change intervals. some newer porsches are at 20k. most bmws and mercedes are at 15k for oil changes.
i don't change mine on any of our cars until 5k or @ 5-6 months...I'm thinking of switching to amsoil and going 10k between changes.
That's just stupid. Oil gets dirty, dirt = damages motor, clogged coil filter = starved motor = damaged motor. "but the additives do wear out, and sludge does build up.... " ...yeah so it DOES go bad then, right?
