Cadillac XTS Forum Discussion, Opinions on oil life indicator in Current Cadillac Vehicle Discussion; Originally Posted by CAPT Mike
First stop thinking "change every 3000 miles." That is old school for cars of "our ...
First stop thinking "change every 3000 miles." That is old school for cars of "our youth." Even with dinosaur oil, today's engines can go 7500 miles without a problem between changes. I cannot say for certain, but I trust they are using synthetic oil and, in that case 7500-10,000 miles is OK between changes.The % of oil life is based on how you drive. Take notice that the %age goes down faster in city driving and much slower in highway driving (constant speed/miles vs stop and go/miles). BTW, this is not new; all my previous BMW's (1984, 2003, 2006, 2006, 2012) had a condition base oil minder and it would often wind up with the dealer changing the oil on the maintenance warranty every 12-13,000 miles-if you traded the car at the end of the four years, BMW would sell that car as a Certified Used Car with a complete engine warranty.
Great points Captain. I recall even the old cars of the '60s, '70s and '80s still recommended oil changes in the 7,000 mile range My memory may be off a little but this whole 3,000 mile oil change was s brilliant marketing campaign by Jiffy Lube.
Go with you Cadillac oil monitor and change at 20%.
A few thoughts. Cadillac and Corvettes for years factory filled with Mobil 1 synthetic. They now brand there own Dexos 1. If you go to Mobil the only oil meeting the Dexos1 spec is Mobil 1, a full synthetic oil. Synthetic oils though not sold as extended drain oil (Mfg want to keep sales volume) have the ability to not break down and can be used for extended drain. Many truck fleet use synthetic oil and go 50,000 miles between changes.
Also crankcase capacity have doubled from the 3000 mile era, that alone doubles oil change interval. You should not be concerned about longer drain intervals.