[lunarhighway]

i don't think it will damage your engine if you remain sensible, what you don't wat to do is go below idle speed, or if you feel the engine is really lugging.

i generally drive around in 5th even at speeds as low as 50km/h = 31 mph the engine is than just a hair above 1000rmp, if i have to accelerate to a higher speed i do tend to downsift one or two gears, so the engine at peak torqe wich is between 2000 and 3000 rmp and as soon as i'm at the desired speed i skip straigth to 5th, even when i'm in 2nd or 3d the rmp's will come down and the momentum of the car is usually enough to allow smooth transition.... while cruising along your car doesn't need all that power, especially at low speeds.

my car is a 1.6 however and my previous car was a 1.3 wich actually had more power, but needed to be revved to get that.

so if it feels that the engine can cope i think you should be fine.