I had a 1977 Buick LeSabre with the odd firing 231 V-6 engine. Talk about a bastard engine, this was it. The same CID engine had in the same year 2 different firing orders of the spark plugs. I drove my Buick in to the ground. The motor leaked oil & the rings were so bad I actually put 90W gear oil in the crankcase hoping to slow the use of oil. It smoked so bad it would lay down a smoke screen like a WW II destroyer. It worked in the summer, but come that winter when it got cold, the starter could not turn the motor over due to the 90W gear oil. Stripped the wheels off & had the junk yard come get it. Loved the body style & the 4 doors, but the worst engine GM ever designed. von.
I always wondered who was responsible for that odd fire engine. I would wager that was like an illegitimate child, nobody claimed responsibility.