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Sedans Cadillac DeVille Cadillac DeVille General Care & Maintenance
86 messages, Last post on Apr 03, 2008 at 3:00 PM
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Replying to: bremertong (Jun 04, 2006 6:53 pm) For most of my life I've changed oil, and filter, at 4,000 miles (or every year if I'm driving it less than 4,000/year). I've felt this is a very conservation schedule compared to the 6,000 or 7,500 or even now 10,000 mile schedules recommended by automobile owner manuals. And not near the 2,500 or 3,000 miles the dealership service people recommend, which is mainly to move money from your pocket to theirs. |
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Replying to: bolivar (Jun 04, 2006 11:28 pm)
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Replying to: imidazol97 (Jun 05, 2006 3:35 am) I've used oils that will darken up significantly within one week after a change. But I've been running Castrol 5-20 for a couple of years, and that stuff looks almost like water when it goes in, and it darkens up very little, even over a couple thousand miles. By 4,000, it will be somewhat darker, but this stuff has less color change that any oil I've previously used. |
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Replying to: bolivar (Jun 04, 2006 11:28 pm) but having only driven 3000 miles in the last four months and indicator at 75% think I will wait til five months. Will probably have only driven 4000 miles by that time. |
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Replying to: imidazol97 (Jun 05, 2006 3:35 am)
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Replying to: bremertong (Jun 05, 2006 9:55 pm) |
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Replying to: bremertong (Jun 04, 2006 6:53 pm)
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Replying to: bwnunnally (Jun 06, 2006 4:53 pm) Oils vary, as Bremertong mentioned, and those systems don't adjust for various oils. One example is if you use synthetic there's no adjustment.
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Replying to: imidazol97 (Jun 06, 2006 5:54 pm) the Mr. Goodwrench or Monroe tire center for less that $20 bucks (with a lube job) then reset the worthless oil monitor gadget and drive happy! 
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I think the oil life indicator was meant to measure regular oils and not longer life synthetics but perhaps is good for both. As mentioned in earlier messages I would not let the indicator go much below 50%, 5000 miles or five months whichever comes first before going in for an oil change. I have at this point never used synthetics but am open to the idea. As discussed in previous messages I drive on paved roads, 2/3rds highway and 1/3rd in town with not very much bumper to bumper stop and go. The final significant variable is the climate, very rarely above 65 degrees in summer and only about 30 days of the year that temperature falls below freezing (late night, early morning). Another factor is that the car is parked in an insulated garage. Having appreciated the comments received here so far I am moving in the direction of 5 months, 5000 miles and 50% whichever comes first. Further comments welcomed and appreciated.
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