Hey Guys. I inherited a RWD Volvo with questionable history. I'm not sure how to care for it. This is an S90 (newer type of 964) so it has a more modern 6 cylinder engine than many of the other bricks.
The PO ran it with no ignition in one cylinder for 10k to 20k miles. He was doing his own oil changes, hopefully once a year, with PHM and Fram PH7328. So there might have been fuel mixed up in the oil for the past three years. Before he started doing it himself he took the car to jiffy lube three times, once a year.
I found his last filter and about 1.5 gallons of old oil, cleaning this up I noticed there was some sludge in one of the bottles, this may have come out of the engine or it may not have.
Looking into the oil filler cap it's definitely not as clean as my similar vintage & slightly less mileage BMW 6 that has run extremely long drain intervals. But it does not look like a sludge monster: features such as bolt heads and casting numbers are still visible although there is not much shiny white or tan metal to see.
I found the ignition problem and will fix it tomorrow. I got 2 gallons of Rotella T5 blend and some Mann W917 filters. I was thinking to run this oil for a shorter drain interval to be determined by whatever we observe during the next few 100 or 1000 miles.
Maybe there is a better course to take. Maybe I should run cheaper oil for a few hundred miles with a different filter to see what happens? FL1A -- and it looks like the truck filter too -- will fit on this car. Or maybe I should take measures to clean it, like soak the oil pan in solvent overnight?
When I go work on the car tomorrow, I might bring my sawzall to open the fram filter up.
The PO ran it with no ignition in one cylinder for 10k to 20k miles. He was doing his own oil changes, hopefully once a year, with PHM and Fram PH7328. So there might have been fuel mixed up in the oil for the past three years. Before he started doing it himself he took the car to jiffy lube three times, once a year.
I found his last filter and about 1.5 gallons of old oil, cleaning this up I noticed there was some sludge in one of the bottles, this may have come out of the engine or it may not have.
Looking into the oil filler cap it's definitely not as clean as my similar vintage & slightly less mileage BMW 6 that has run extremely long drain intervals. But it does not look like a sludge monster: features such as bolt heads and casting numbers are still visible although there is not much shiny white or tan metal to see.
I found the ignition problem and will fix it tomorrow. I got 2 gallons of Rotella T5 blend and some Mann W917 filters. I was thinking to run this oil for a shorter drain interval to be determined by whatever we observe during the next few 100 or 1000 miles.
Maybe there is a better course to take. Maybe I should run cheaper oil for a few hundred miles with a different filter to see what happens? FL1A -- and it looks like the truck filter too -- will fit on this car. Or maybe I should take measures to clean it, like soak the oil pan in solvent overnight?
When I go work on the car tomorrow, I might bring my sawzall to open the fram filter up.
