I too had an Olds 98 Regency, bought it from Dad. It had 300,000 plus on it, second engine and 3rd Transmission. It was underpowered and slow but somewhat reliable. I had carb and alternator issues with it too. I was glad to get it out of my hair, too much 1980's poor engineering.My 2001 1 ton work truck is one of the best made trucks I ever owned, the 1983 GMC 1 ton it replaced was the best truck ever made. It had over 500,000 miles on two engines both 350 four bolt blocks, three Turbo 400 transmissions and the same rear end a 3:90 14 bolt posi.
The car I had was a 1983 Olds 98 Regency, 307 200r4. We put 275,000 miles on it in 15 years, with one transmission rebuilt. An old transmission guy told me to keep it in 3 and only use Overdrive when on the open highway at 65+ because when going 35-40 mph in OD, the pump doesn't go fast enough to keep the transmission satisifed. When it was 20 years old and had 180,000 miles, we all jumped into and drove across the country to Washington state and never gave the cars age a second thought.
I have driven many cars and anything from GM was always at the top.. It must be hard for GM and Ford watching Americans put them down while the Japs and other car companies steal all there engineering discoveries and get praised for it..