Well they are not the worst on gas. The 60 degree looper 150's and 175's that OMC turned out actually burned about the same amount of fuel as a 200 LOOPER did at cruise, and the 200 only burned slightly more at WOT. A 200-225 OMC LOOPER should burn around 12-15 GPH at cruise and top out in the 20-23 GPH range. My 150 MERC burns 12-13 GPH at cruise, and tops out at around 20 GPOH WOT. A 175 JOHNSON 60 degree engine burned pretty much what my MERC does. The earlier 200-225 LOOPERS(86-87) were said to be the best fuel to HP ratio of an old school 2 stroker. But when a new OPTIMAX 175 is burning 6-7 GPH at cruise and topping out at 16-17 GPH WOT, the new tech adds up if you run them alot.