Schedule B says oil change every 3K mi (about every 6 weeks), but the oil is still clean enough to read the dip stick markings. Seems a shame to change it this soon.
Would going to a 5K OCI cause problems later on with any warranty claim under the 3/36 or 7/70?
TIA.
Bob
If your vehicle fits the description for 3k oil changes and you don't do it that way, yes you may have a problem if a warranty claim is needed. follow your maintenance logbook!
I run synthetic, and follow *Schedule A*. Even then, the oil does not get completely black, even after that much mileage. I am out of warranty so I don't have to worry about that part. Whatever you decide to do, I would recommend keeping good records in the event of a warranty claim. The 2.7 was known for sludging problems from at least
1998 - 2001. I don't know how later 2.7's are holding up.-Kirk Matheson
If an oil turns "black" it means that it is doing its job of holding contaminates in suspension. A non-detergent oil stays nice and clear a lot longer that a great detergent synthetic oil.
Richard.
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