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| Author |
Message |
    
Don Vigus
New member
Username: donvigus
Post Number: 1
Registered: 12-2008
| | Posted on Monday, December 15, 2008 - 10:03 pm: | 
|
I have a 42' Grand Banks Classic with dual 120 Lehman. Sometimes I cruise at 1200 RPM in an effort to get great fuel economy (which I do...3 miles per gallon) Am I hurting the engines. Occasionally I cruise at 1600 RPM, the motors seem to run very smooth at both RPM. |
MistaHays
Advanced Member
Username: mistahays
Post Number: 936
Registered: 02-2006
| | Posted on Tuesday, December 16, 2008 - 09:25 am: |
|
Don,
Not as familiar with Lehmans but assuming normal rules of opperation, I would have no problem doing what you are doing - low RPM cruising, but would run them up to their max power rating periodically. Change oil regularly as well. |
MistaHays
Advanced Member
Username: mistahays
Post Number: 937
Registered: 02-2006
| | Posted on Tuesday, December 16, 2008 - 09:27 am: |
|
a link that may be of interest to you. Looks like some manuals.
http://www.gbwoodies.com/Owners%20Manuals.htm |
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