Synthetic SAE 30 oil?
- Thread starter 32carv
- Start date
I suggest you consider one of the Mobil 1 oils available, different viscosity ranges at least at Walmart.
Originally Crusader manuals specified grade SAE 30 in the Manuals. Subsequently Crusader indicated that multi viscosity oils are acceptable with some specification.
As it was explained to me, they felt that the additives in multi viscosity oil can break down with the oil tending to have the properties of the base oil. Apparently they no longer consider that a problem.
If you boat in an area where the temperatures can get low, I believe that straight 30 oil can cause more engine wear on warm-up unless it does not increase in viscosity as normal oils do. Some Synthetic oils may be better.
I use Mobil 1 oil in both of my 502 Crusaders and they burn less oil with the Mobil 1.
Originally Crusader manuals specified grade SAE 30 in the Manuals. Subsequently Crusader indicated that multi viscosity oils are acceptable with some specification.
As it was explained to me, they felt that the additives in multi viscosity oil can break down with the oil tending to have the properties of the base oil. Apparently they no longer consider that a problem.
If you boat in an area where the temperatures can get low, I believe that straight 30 oil can cause more engine wear on warm-up unless it does not increase in viscosity as normal oils do. Some Synthetic oils may be better.
I use Mobil 1 oil in both of my 502 Crusaders and they burn less oil with the Mobil 1.
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You have other choices as well. Now Volvo recommends a full syn 10W-40 that they sell, and I bet that you could get it from Amsoil as well.
I like being able to find stuff locally without having to search all over so I'd probably use the Semi Syn Merc 25/40 which I'm sure would be fine in your application.
While Mobil 1 will work in this application, I think using an FC/W rated oil makes sense since they have better corrosion resistance than standard passenger car oils do.
https://www.nmma.org/assets/cabinets/Cabinet456/2015 FC-W List.pdf
I like being able to find stuff locally without having to search all over so I'd probably use the Semi Syn Merc 25/40 which I'm sure would be fine in your application.
While Mobil 1 will work in this application, I think using an FC/W rated oil makes sense since they have better corrosion resistance than standard passenger car oils do.
https://www.nmma.org/assets/cabinets/Cabinet456/2015 FC-W List.pdf
Shell Rotella has single weight oils. I understand what Volvo recommends, but that recommendation is 10 years old and based on 10 year old knowledge and technology. Considering the average boater puts 50-100 hours on their engines between oil changes, I cannot see where a 2016 technology oil even if multi viscosity could hurt.
My 2 cents.
My 2 cents.