Marine Lubrication
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Re: Marine Lubrication
Originally Posted by Phazar454Mag
You mention Amsoil Marine 15W-40 as #3. Why not Amsoil MCV or ARO 20W-50 ? I would think that the higher viscosity should protect the engine better in case it is run hard. Any specific properties of the Amsoil Marine 15W-40 that makes it superior compared to their MCV or ARO 20W-50 oils ?
My quesiton would come from my perspective in my 540ci application. I ran Valvoline 50w Racing during the first 40 hours but that stuff is THICK at start up. With either one, I could probably free up 50HP lost in parasitic drag with the Valvoline!
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Re: Marine Lubrication
Originally Posted by SeaRay Jim
Then I'd take that question one step further and ask, why not Amsoil TRO (20w-50 Racing/Severe Service)?
My question would come from my perspective in my 540ci application. I ran Valvoline 50w Racing during the first 40 hours but that stuff is THICK at start up. With either one, I could probably free up 50HP lost in parasitic drag with the Valvoline!
My question would come from my perspective in my 540ci application. I ran Valvoline 50w Racing during the first 40 hours but that stuff is THICK at start up. With either one, I could probably free up 50HP lost in parasitic drag with the Valvoline!
The main reason for not running racing oils is that they generally lack detergent properties and require frequent changes, like every time out.
The m-1 v-twin 20/50 seems to have the best of all properties for our boating needs. In fact we have started running it in our Late model and UMP Modified dirt race cars also.
My engine builder recommends straight 30w Valvoline for break in.
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Re: Marine Lubrication
Originally Posted by Wobble
My engine builder recommends straight 30w Valvoline for break in.
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Re: Marine Lubrication
Originally Posted by SeaRay Jim
For auto or marine or both? Seems like there would be a difference based on clearances between a motor built for the street and one built for a boat.
My builders break in oil choice is his personal preference, he also uses straight 30W Kendell if the Valvoline is not available.
Obviously you have to go with what your builder recommends. Just surprised at the straight 50W, something I would expect to see in an older Harley
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Re: Marine Lubrication
Originally Posted by Wobble
Seems like a 50 weight oil is not a good idea. With the motor cold it's likely that 1/ the oil pump bypass is open reducing flow and/or 2/ the block bypass will open allowing oil to bypass the filter and/or 3/ the oil filter bypass will open not allowing the filter to do it's job. the 50w is measured at 210*F so you can imagine what that stuff is like at 60*F.
The main reason for not running racing oils is that they generally lack detergent properties and require frequent changes, like every time out.
The m-1 v-twin 20/50 seems to have the best of all properties for our boating needs. In fact we have started running it in our Late model and UMP Modified dirt race cars also.
My engine builder recommends straight 30w Valvoline for break in.
The main reason for not running racing oils is that they generally lack detergent properties and require frequent changes, like every time out.
The m-1 v-twin 20/50 seems to have the best of all properties for our boating needs. In fact we have started running it in our Late model and UMP Modified dirt race cars also.
My engine builder recommends straight 30w Valvoline for break in.
Ken
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Re: Marine Lubrication
Originally Posted by SeaRay Jim
Then I'd take that question one step further and ask, why not Amsoil TRO (20w-50 Racing/Severe Service)?
Anyone who knows which of the ARO, MCV and TRO 20W-50 oils from Amsoil would be the best for a marine engine ?
Thanks.
Last edited by Phazar454Mag; 04-07-2006 at 11:36 AM. Reason: fixing typo
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Re: Marine Lubrication
Since Amsoil seems to recommend anything they are asked about, (I think I could ask about silicone spray being used in my 540 and they'd agree that it would be a good choice ) I tried to find Royal Purple Racing 51 and no one that sells RP around here stocks it, I ordered Amsoil TRO 20w-50 Racing.
I'll see how it does. What I'm hoping for is less drag on cold start, maintain good oil pressure (I think OP was a little to high with Valvoline 50 Racing) and gain 150HP rescued from drag. LOL Ok, better cold starts and good oil pressure and protection would be good. I'll be changing it 2-3 time this season anyhow.
I'll see how it does. What I'm hoping for is less drag on cold start, maintain good oil pressure (I think OP was a little to high with Valvoline 50 Racing) and gain 150HP rescued from drag. LOL Ok, better cold starts and good oil pressure and protection would be good. I'll be changing it 2-3 time this season anyhow.
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Re: Marine Lubrication
Originally Posted by Wobble
Seems like a 50 weight oil is not a good idea. With the motor cold it's likely that 1/ the oil pump bypass is open reducing flow and/or 2/ the block bypass will open allowing oil to bypass the filter and/or 3/ the oil filter bypass will open not allowing the filter to do it's job. the 50w is measured at 210*F so you can imagine what that stuff is like at 60*F.
The main reason for not running racing oils is that they generally lack detergent properties and require frequent changes, like every time out.
The m-1 v-twin 20/50 seems to have the best of all properties for our boating needs. In fact we have started running it in our Late model and UMP Modified dirt race cars also.
My engine builder recommends straight 30w Valvoline for break in.
The main reason for not running racing oils is that they generally lack detergent properties and require frequent changes, like every time out.
The m-1 v-twin 20/50 seems to have the best of all properties for our boating needs. In fact we have started running it in our Late model and UMP Modified dirt race cars also.
My engine builder recommends straight 30w Valvoline for break in.
So Wobble..what oil filters are you using anyways?
#570
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Re: Marine Lubrication
Hydro, If you are only putting about 30 hrs per year, N/A motors, indoor stored. How often would you change the V-twin oil. Would it be acceptable to use late May through September? I have decided to use this oil. What's your opinion? Eric