First... THIS IS NOT FROM MY CAR!!! No way would anything I take care of EVER look like this!
This Firestone filter (PH5 xreference) is off of a 97 Tahoe w/ the tree-fiddy engine. Owner complained of some harsh knocking on startup, and for the first minute or so of operation. He also had some "mayonnaise" around the filler cap. The truck is a 90% short-tripper, so that explains the goo in the filler tube pretty well. I told him to come on over, we'll change the oil and see if we can see anything there. The window sticker from Firestone showed it was almost 3,200 miles past its 3,000 mile OCI so this oil/filter combo has 6,200 miles and had 9 months on it. He says it was filled with synthetic, but the sticker made no mention of it.
I performed the oil change and watched the oil on its way out of the pan. It didn't seem so bad really. It was dark, almost black, but still clear. It was not milky at all or "chocolatey", so I don't think coolant was getting into the oil. However, it did smell bad. I can't really give you a great idea of the smell... um... the only thing I can think of is your pee in the morning after having 2-3 packages of Ramen noodle soup for dinner the night before. (There's the proof that I went to college!) No noticeable particulates.
I installed a Bosch Premium filter and Valvoline SynPower 5-30. I didn't pre-fill the filter because I was using a 5+qt jug and didn't want to deal with that big awkward thing under the truck. There was an initial rattle on startup until the oil system was primed, then everything was nice and smooth. The knocking he previously heard was gone.
He had to get going, and I was ready for lunch so we shook hands and he was off. I went on about my day but kept thinking about how bad the oil smelled. When I got back from running some errands, I decided to cut open the oil filter just to see what things looked like.
WHOA!!! See the following pics:
This is what I poured out of the can
This is the bottom of the can AFTER I poured out all of that stuff!
Not only was this packed FULL of crud, the adbv and bypass pretty much fell off of the filter when I lifted the innards out of the can. The bypass was totally crudded over. As bad as all of this was, I can barely see how oil got through this filter, whether through the media OR the bypass, as that was plugged up! Look again at the thing!
After seing all this, I called dude back and told him to come back in two weeks and we'll cut current filter open to see what we got in there. Depending on what we find we'll either do another oil change with cheap dino or just change the filter and revisit. Either way, some MMO is going in that motor.
I'm guessing the PCV system isn't working right either, so a new PCV valve will be going in and we'll check the lines for airflow.
This Firestone filter (PH5 xreference) is off of a 97 Tahoe w/ the tree-fiddy engine. Owner complained of some harsh knocking on startup, and for the first minute or so of operation. He also had some "mayonnaise" around the filler cap. The truck is a 90% short-tripper, so that explains the goo in the filler tube pretty well. I told him to come on over, we'll change the oil and see if we can see anything there. The window sticker from Firestone showed it was almost 3,200 miles past its 3,000 mile OCI so this oil/filter combo has 6,200 miles and had 9 months on it. He says it was filled with synthetic, but the sticker made no mention of it.
I performed the oil change and watched the oil on its way out of the pan. It didn't seem so bad really. It was dark, almost black, but still clear. It was not milky at all or "chocolatey", so I don't think coolant was getting into the oil. However, it did smell bad. I can't really give you a great idea of the smell... um... the only thing I can think of is your pee in the morning after having 2-3 packages of Ramen noodle soup for dinner the night before. (There's the proof that I went to college!) No noticeable particulates.
I installed a Bosch Premium filter and Valvoline SynPower 5-30. I didn't pre-fill the filter because I was using a 5+qt jug and didn't want to deal with that big awkward thing under the truck. There was an initial rattle on startup until the oil system was primed, then everything was nice and smooth. The knocking he previously heard was gone.
He had to get going, and I was ready for lunch so we shook hands and he was off. I went on about my day but kept thinking about how bad the oil smelled. When I got back from running some errands, I decided to cut open the oil filter just to see what things looked like.
WHOA!!! See the following pics:
This is what I poured out of the can
This is the bottom of the can AFTER I poured out all of that stuff!
Not only was this packed FULL of crud, the adbv and bypass pretty much fell off of the filter when I lifted the innards out of the can. The bypass was totally crudded over. As bad as all of this was, I can barely see how oil got through this filter, whether through the media OR the bypass, as that was plugged up! Look again at the thing!
After seing all this, I called dude back and told him to come back in two weeks and we'll cut current filter open to see what we got in there. Depending on what we find we'll either do another oil change with cheap dino or just change the filter and revisit. Either way, some MMO is going in that motor.
I'm guessing the PCV system isn't working right either, so a new PCV valve will be going in and we'll check the lines for airflow.
