The point is about T & R and whether they are really competent mechanics or not. Having a shop for 30 years does not mean they’re turning wrenches nor does it mean their hands are scarred up and have residual grease under the fingernails.
I used to listen to T & R on the radio all the time at my shop. While in one weekend to finish building an engine (I work better when undisturbed) a caller posed the question, “when I turn my A/C on I hear a loud squealing”. This was on an older Oldsmobile if I remember with V-belts.
So my first thought is an out of adjustment or worn A/C compressor belt.
Ten minutes later the caller is still being led down the “you have a bad A/C compressor” road and that’s how the call ended, with the caller apparently ready to get a new compressor and have at it. Not one single mention of a belt problem.
Being disgusted with the diagnosis of a problem that an entry level tech should be able to determine within seconds, I switched off the show permanently.
I always wondered if that caller sunk well into 3 figures or more on a new compressor.
Factor in their advice to someone about having a bad gasket on an anti-afterburn valve (this particular car does not even HAVE a gasket and AAV is a bet of a stretch) and the repeated references to replacing an oil pump as a cure for low oil pressure are just a couple of things that shall we say, cause me to be a bit suspect of them.
(After turning wrenches for over 35 years I have yet to see a bad oil pump or one that was worn enough to cause a problem and fellow mechanics I’ve talked to have not seen it either although one guy I know used to throw oil pumps at cars all the time. This was usually followed minutes later by tearing it back apart to inspect the rod and main bearings, something that could have been done while the oil pan was off.)