Marine Lubrication
01-02-2007 | 07:19 AM
#1061
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From: New Hartford CT
Re: Marine Lubrication
Ken
01-02-2007 | 09:07 AM
#1062
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From: Missouri
Re: Marine Lubrication
You know your stuff 02man..
Here is my take:
The MCO (Like V-Twin) and HDEO (Delvac 1) are still Group IV/V and they have always been my top picks.
Oil fanatics are pizzed off to say the least...check this out..
I borrowed this from an oil thread...
Mobil 1 and Castrol Syntec have betrayed the public and ruined the credibility of synthetic oil.
Group III and GTL may be , or could be, as good or even better than PAO ...but why do oil companies feel it is ok to mislead us and price gouge as well?
Mobil 1 used to be under $4/qt when it was a true synthetic. Group III faux synthetics used to cost from $1 something / qt to $4/ qt.
Now Mobil 1 Group III Faux costs $6 /qt to $7 /qt... is it any wonder that I feel ripped off , and I am now strongly anti-Mobil 1?
Redline, Castrol GC, Amsoil, Pennzoil Platinum [on sale], Delvac 1, Delo 400, Rotella T and Rotella 5W-40 faux syn, Trop Arctic/Havoline/Motorcraft are on the 'A' list and Mobil 1/ Castrol Syntec are on the 'S' list.
I especially like Redline, it is now about the same price as M1 and Redline is still the best oil I've tried.
I am now using Penzoil/Amsoil/Redline or Delvac 1 in my cars and V-twin; Amsoil Severe Service Racing or Redline in the boat.
01-02-2007 | 02:10 PM
#1064
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01-02-2007 | 02:12 PM
#1065
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01-02-2007 | 02:22 PM
#1066
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Re: Marine Lubrication
The question becomes do we continue with M-1 15W-50 from a number of you?
My answer is that in an offshore boat you need the best edge you can get if you are to see the most longevity from your engine. I like a Group IV/V synthetic best.
Here are the 2007 2,000lb. synthetic oil gorrillas:
M-1 V-Twin 20W-50/Redline 20W-50/RP 20W-50/Amsoil Severe Service 20W-50/Spectro 20W-50.The list is getting shorter.
Yes...15W-50 M-1 is still a great product and i use it as well. It is NOT on the list above however.
My answer is that in an offshore boat you need the best edge you can get if you are to see the most longevity from your engine. I like a Group IV/V synthetic best.
Here are the 2007 2,000lb. synthetic oil gorrillas:
M-1 V-Twin 20W-50/Redline 20W-50/RP 20W-50/Amsoil Severe Service 20W-50/Spectro 20W-50.The list is getting shorter.
Yes...15W-50 M-1 is still a great product and i use it as well. It is NOT on the list above however.
01-02-2007 | 04:00 PM
#1069
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Re: Marine Lubrication
The bottom line is Merc's product is more comparable to a straight weight 40.
So using a 10W-40 multi-vis oil in place of a 40 wt will probably lead to some type of problems and most notably probably increased wear.
We hear that the following oil viscosities are used routinely and successfully;
15W-50
25W-40 Mercury
20W-50
15W-40 Amsoil Synthetic ("pleasure boats")
30wt if less than 50*F
40 wt for temps between 75-85*F
50wt for temps over 85*F
For 4-stroke outboards I like a 10W-40 such as Amsoil's or 10W-40 V-twin.
Last edited by Hydrocruiser; 01-02-2007 at 04:21 PM.
01-02-2007 | 07:00 PM
#1070
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Re: Marine Lubrication
To address more concerns about Group III synthetic oils...
While I prefer Group IV/V bases, modern group-III oils can nearly match the performance of PAOs at about half the price. Because of this, PAO based oils are rapidly disappearing. There are new processes being investigated which may significantly cut the cost of producing PAOs, and make them an important component of oil again.
While I prefer Group IV/V bases, modern group-III oils can nearly match the performance of PAOs at about half the price. Because of this, PAO based oils are rapidly disappearing. There are new processes being investigated which may significantly cut the cost of producing PAOs, and make them an important component of oil again.
