That amount of oil is on the high side, I would change the oil and oil filter every 5000 km on short hauls , has the engine been over heated or has a big mileage been clocked up. some times the valve stem seals get hard and let oil enter the cylinder, coast down a hill then accelerate while watching for blue smoke ,blue smoke indicates engine ware.
Regards,
Tony
If your truck is over 75,000 miles on it you may want to switch to a High Mileage Oil. Do you notice any oil seepage on the engine? For the dealer to say "it is normal" it is not. However if you have some oil seepage around the engines seals then it may burn some extra oil. But for the engine to be in perfect condition and burn a quart of oil, no.
Regards,
Tony
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How many miles on it???
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