I have to ask what kind of mechanic wouldn't check the dipstick...but when my Sonata was new I used a free oil change coupon at the dealer. Got home and checked, discovered it was a quart low. So I guess they don't.
It's probably thicker than 0-16.Originally Posted by RayCJ
Vehicle details:
2017 Chevrolet Silverado 1500 LTZ Crew Cab with 5.3L V8
Miles: 106,700
Purchased from a dealership in December 2018 with 99,465 miles; the previous owner ran a lot of highway miles as Trip B had 30,400 miles on it with an avg of 20.4 MPG.:
Event Summary:
Owner took car to local bumbling mechanic to have ATF R&R'd and also install K&N air filter. Bumbling mechanic filled engine with ATF and did not service the trans.
Owner drove the car minimally -possibly 20 miles or so. Punched the gas a few times to hear the engine.
Owner noticed some oil drips, realized it was ATF and discovered the error.
Owner dumped/saved the ATF from the engine and replaced w/ Pennzoil Platinum Full Synthetic 0W-20 and Wix XP filter.
Owner Questions:
Did this possibly damage engine and what should I watch for?
Is a UOA advised?
What are possible next outcomes with the engine and bad transaction with bumbling local mechanic?
I personally do not think 20 miles of driving on ATF did significant damage to the engine. ATF is roughly 5-10 weight oil and if your engine is spec'd for 0/20, it probably didn't do awful things in that short period of time.
1) Do not accept money from dealer as compensation for possible damage happening in the immediate future. (Check w/ a lawyer in your State about this). In some places, accepting compensatory settlement means indemnification of future liability.
2) Save your written post above and any other written communications you had with the mechanic. You may need dated documentation down the line.
3) Save the drained ATF if possible.
4) Take the vehicle to another mechanic (preferably a dealer) for an opinion and engine check-up.
5) Do another oil & filter change to flush-out the carry-over ATF that's still in there. Make sure the oil you use is the proper spec for your engine!
6) At the end of the next oil interval, do a UOA.
7) Keep an eye on it.
Ray
If you drop the pan on these you have to remove some other stuff. They are PITA to drop the pan. You can do it without removing other parts but it makes a major mess.If you were able to change your own engine oil then why didnt you change the transmission oil yourself too?