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Northstar oil use
By JB on
2000 Cadillac DeVille 4dr Sedan
For every one that posted a note about oil consumption, a quart or so every 2000 miles or so is somewhat normal. Excessive consumption can also be related to piston rings being stuck due to "babying" the engine. One relatively easy solution is to find a clear stretch of road, place the car in second gear and accelerate quickly up to ~ 70 mph, then coast down to 40 mph (no braking!). Do this 3 -4 times. It will help keep the piston rings floating free and seated against the cylinder walls, reducing oil consumption. Dealers and knowledgeable mechanics can also perform a chemical cleaning.
The smooth ride
longer seat space under the legs and a slightly greater seat travel distance from the steering wheel.