I've been on the dealer end of installing engines and transmissions under warranty.
Lot's of failures on older (early 90's) Lincoln Continental 3.8 engines. All owners got a new assembly line engine. Basically just a take out and bolt in procedure. Of course, the new engine was just as big a piece of [censored] as the old one.
Never had to give a customer a hard time over having changed their own oil as long as their logbook didn't look like all the entries were made the same day. I did turn down a sludged up engine with obviously forged hand-written receipts from a quick-lube.
And there was the Corvette with an oil consumption problem, back when their were carburetors. Took the air cleaner lid off, and it was full of corn husks....
Caught a couple with less than a thousand miles on the odometer at the drag strip with their time slips still in their hands, and voided their warranties on the spot.
"Normal" driving and maintenance, you'll never have a problem.
Lot's of failures on older (early 90's) Lincoln Continental 3.8 engines. All owners got a new assembly line engine. Basically just a take out and bolt in procedure. Of course, the new engine was just as big a piece of [censored] as the old one.
Never had to give a customer a hard time over having changed their own oil as long as their logbook didn't look like all the entries were made the same day. I did turn down a sludged up engine with obviously forged hand-written receipts from a quick-lube.
And there was the Corvette with an oil consumption problem, back when their were carburetors. Took the air cleaner lid off, and it was full of corn husks....
Caught a couple with less than a thousand miles on the odometer at the drag strip with their time slips still in their hands, and voided their warranties on the spot.
"Normal" driving and maintenance, you'll never have a problem.
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