i HIGHLY doubt that. how did they recover your "old" oil?
Sorry that that you doubt what I sat right there not ten feet away from and watched them do.
There is NO OTHER explanation for what happened.
They know from the start how much your car takes.
Guy goes into pit ,drains oil.
Guy comes up from pit with a plastic bottle looking like a tea pitcher dripping with oil.
Guy puts 5 quarts of clean new oil in car from oil pumping machine.
Guy "Tops Off" oil from tea pitcher.
Called guy on it.
"But your car takes more than five quarts of oil"
Grabbed the "Manager"and she knew they got caught.
They drained the mixed oil and installed 6.5 quarts of clean NEW oil.
Their info in the store says "Up To" five quarts for xx price.
They did not ask if I was willing to pay for the extra quart and a half they just used this scam.
Hmmm, maybe they only put 4.5 quarts of new oil in and 2 quarts of my "Old" oil back in.
Do the math.Shortchange enough people and the dollars can get big.
Now I have a car that takes 8 quarts?
They will never see me again.