You are NOT going to get 10-11 knots more efficient by running the engines to a higher RPM. You will burn more fuel. It takes X amount of fuel...
The Manhattan 68' is one hell of a sea boat. I have taken a 66' (same hull and pretty much same exact boat structurally) Ft. Laud to Guatamala...
They're cheap in relation to other brands, and Azimut sells the sizzle but is short on the steak!
If you never run the motors up because they burn too much fuel you're going to be paying a hell of a lot more for major overhauls. Those motors...
Sunseeker 66 or 68' would be the best of the ones you mentioned by a long shot for seakeeping, ride, and quality. Azimuts have a serious lack of...
You have 99-101 PSI and you're worried about oil pressure? That is a ton of oil pressure and those motors would get properly lubricated at 1850...
Stamoid cleaner, they also make a wax for it, it works......
I can't remember. However the Cat's are FAR noisier in a boat like a CABO than equivalent MAN or MTU's. A lot more harmonic noise in the engine...
You have something else going on. Either the hull design has something to do with tearing up the seals in the drives, or you maneuver in sandy...
CATS are traditionally loud. You may need add mufflers or open part of your enclosure so you're not sucking the noise back towards you at cruise.
Every 35' Cabo express I ever ran, had a single 400 gallon tank in the stern. Are you sure it wasn't a 32' or was it one of the first 35's?
