Marine Lubrication
#691
Registered
Join Date: Aug 2005
Location: Manitowoc, WI
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
Re: Marine Lubrication
Originally Posted by minxguy
.................the micron rating on all the posted filters, are the ratings absolute or nominal? ken
Nominal = 50% @ "X" microns
Absolute = 98.7% @ "X" microns
The AMSOIL filter is absolute at 15 microns and the Mobil filter is absolute at 18 microns. The rest will go by the specific data mentioned.
All the figures above show the specific Efficiency at the specific Particulate Size.
#692
Gold Member
Gold Member
Thread Starter
Re: Marine Lubrication
Originally Posted by Rebel_Heart
Hydro - I have paid for an Amsoil membership because I am using the gear lube in my Bravo. What am I giving up if I use the Amsoil engine oil and filter? I was planning on using Mobil 1 and a Wix filter, but wondered if Amsoil's products are as good? I have new 540s and want to treat them right. Thanks.
#693
Registered
Re: Marine Lubrication
Originally Posted by o2man98
What are you referring to???
Nominal = 50% @ "X" microns
Absolute = 98.7% @ "X" microns
The AMSOIL filter is absolute at 15 microns and the Mobil filter is absolute at 18 microns. The rest will go by the specific data mentioned.
All the figures above show the specific Efficiency at the specific Particulate Size.
Nominal = 50% @ "X" microns
Absolute = 98.7% @ "X" microns
The AMSOIL filter is absolute at 15 microns and the Mobil filter is absolute at 18 microns. The rest will go by the specific data mentioned.
All the figures above show the specific Efficiency at the specific Particulate Size.
#695
Gold Member
Gold Member
Thread Starter
Re: Marine Lubrication
Originally Posted by vandeano
Mercury Mercruiser 25W-40 Synthetic Blend Engine Oil...What are some comments on this oil???
As with all blends you don't know the ratio of synthetic to conventional oil. In many cases it is usually only about 20% synthetic.
The Blend is for 4-stroke outboards that were shearing down the conventional oil I hear.
#696
Registered
Join Date: Sep 2004
Location: Torrance, California
Posts: 362
Likes: 0
Received 0 Likes
on
0 Posts
Re: Marine Lubrication
I read somewhere that Mercruiser oil has additive ingredients for the marine environment not found in regular automotive oil. Any truth to that and if so what it the ingredient?
#697
Platinum Member
Platinum Member
Re: Marine Lubrication
Originally Posted by Rebel_Heart
Hydro - I have paid for an Amsoil membership because I am using the gear lube in my Bravo. What am I giving up if I use the Amsoil engine oil and filter? I was planning on using Mobil 1 and a Wix filter, but wondered if Amsoil's products are as good? I have new 540s and want to treat them right. Thanks.
#698
Platinum Member
Platinum Member
Re: Marine Lubrication
Originally Posted by vandeano
I read somewhere that Mercruiser oil has additive ingredients for the marine environment not found in regular automotive oil. Any truth to that and if so what it the ingredient?
#699
Registered
Join Date: Sep 2004
Location: Torrance, California
Posts: 362
Likes: 0
Received 0 Likes
on
0 Posts
Re: Marine Lubrication
Originally Posted by articfriends
You need to be 100% sure your rings are seated before converting your motor to synthetic oil or you'll be pulling it back out of your boat.Everyone gives the example of chevy corvettes coming from the factory with mobil one but I have seen motors that were NOT fully broken in converted to synthetic too early and if the rings glaze she'll have high leakdown rates FOREVER,Smitty
That might explain the problem I had with my rebuilt engine. Thinking it was a roller motor, I didn't know it would of been a problem. Im sure glad I used Mercruiser synthetic blend on my new crate.
#700
Gold Member
Gold Member
Thread Starter
Re: Marine Lubrication
Originally Posted by vandeano
I read somewhere that Mercruiser oil has additive ingredients for the marine environment not found in regular automotive oil. Any truth to that and if so what it the ingredient?
Characteristics of Additives
Additive Name Characteristics
Detergency & cleaning action Phenaltes, Sulphonates, Naphthenates Interacts with varnish or sludge to neutralize and solubilize.
Dispersancy PBI (Polyisobutylene) Succinimides Dispersants are soluble in the oil and have a polar end which attracts and binds to contaminants preventing settling and adhesion to metal surfaces.
Antifoaming Silicone Polymers (very low concentrations) Not really necessary for diesel engines in properly designed systems, but provides anti-foam in gearbox and also at the refinery during blending.
Pour Point Polymethylacrylate Used in SAE 30 grades and below to ensure point criteria are met.
Anti-wear load carrying ZDTP (Zincdialkyldithiophosphate)ZDDP (Zincdiethlydithiophosphate) Chemicals react with surfaces forming films which have a slower shear strength than parent metal.
VI Improvers Polymers of: Methacrylate Acrylate Olefin Styrene-Butadiene Increase in relative viscosity more at high than low temperature.
Rust and corrosion inhibition Sulphates, Thiourea type chemicals Chemically absorbed onto bare metal surfaces providing protection and neutralization.
Last edited by Hydrocruiser; 06-24-2006 at 10:26 AM.