AKBASSKING
Active Member
- Apr 13, 2008
- 4,649
- Boat Info
- 1988 Yacht Fisher
- Engines
- Twin 375hp Cat 3208 T/A
What do you think? Would you switch to 25W-40 or stay with straight 30W?:huh:
Here is the question I sent MerCruiser:
Serial Number: 0A514643
Model Number: 3263364
Dealer Name:
Boat Manufacturer: Sea Ray
Boat Model: 1986 300DB
Contact By: E-Mail
Comments:
This is a 1986 model year boat. The MerCruiser manual states the engine oil should be straight 30w oil. I understand MerCruiser is now recommending something different?
What oil is now recommended for these old but still working engines? They are the 260hp model.
Mercury Marine
Outboard_Customer_Assistance@mercmarine.com
http://www.mercurymarine.com
Here was their response:
Mr. Teseniar,
Normally MerCruiser would recommend that you use a MerCruiser Oil 25 W 40 in our engines.
On our product that has been in service for 24+ years we would recommend that you continue to use the same oil that the previous owner has been using.
A good grade of straight 30 weight oil will not hurt the engine and has been helping to keep it running for several years. MerCruiser has no data on switching from one weight of oil to another weight of oil after this many years and cannot tell you if there will be any unforeseen problems.
If you would like to speak with a MerCruiser Consumer Service Representative please feel free to contact us at 405-743-6566.
Best regards,
Jo-Ann Lawson
Consumer Service Specialist
MerCruiser Customer Service
Here is the question I sent MerCruiser:
Serial Number: 0A514643
Model Number: 3263364
Dealer Name:
Boat Manufacturer: Sea Ray
Boat Model: 1986 300DB
Contact By: E-Mail
Comments:
This is a 1986 model year boat. The MerCruiser manual states the engine oil should be straight 30w oil. I understand MerCruiser is now recommending something different?
What oil is now recommended for these old but still working engines? They are the 260hp model.
Mercury Marine
Outboard_Customer_Assistance@mercmarine.com
http://www.mercurymarine.com
Here was their response:
Mr. Teseniar,
Normally MerCruiser would recommend that you use a MerCruiser Oil 25 W 40 in our engines.
On our product that has been in service for 24+ years we would recommend that you continue to use the same oil that the previous owner has been using.
A good grade of straight 30 weight oil will not hurt the engine and has been helping to keep it running for several years. MerCruiser has no data on switching from one weight of oil to another weight of oil after this many years and cannot tell you if there will be any unforeseen problems.
If you would like to speak with a MerCruiser Consumer Service Representative please feel free to contact us at 405-743-6566.
Best regards,
Jo-Ann Lawson
Consumer Service Specialist
MerCruiser Customer Service