I was asked what the current factory additives are in synthetic oils and some premium conventional oils:

Here are the "surface protective" agents:


Antiwear and EP Agent:

-Reduce friction and wear and prevent scoring and seizure.

-Zinc dithiophosphates, organic phosphates, acid phosphates, organic sulfur and chlorine compounds, sulfurized fats, sulfides and disulfides.

-Chemical reaction with metal surface to form a film with lower shear strength than the metal, thereby preventing metal-to-metal contact.

Corrosion and Rust Inhibitor

-Zinc dithiophosphates, metal phenolates, basic metal sulfonates, fatty acids and amines.

-Preferential adsorption of polar constituent on metal surface to provide protective film, or neutralize corrosive acids

Detergent

-Keep surfaces free of deposits.
-Metallo-organic compounds of sodium, calcium and magnesium phenolates, phosphonates and sulfonates.
-Chemical reaction with sludge and varnish precursors to neutralize them and keep them soluble.

Dispersant
-Keep insoluble contaminants dispersed in the lubricant.
-Alkylsuccinimides, alkylsuccinic esters, and mannich reaction products.
-Contaminants are bonded by polar attraction to dispersant molecules, prevented from agglomerating and kept in suspension due to solubility of dispersant.

Friction Modifier

-Alter coefficient of friction.
-Organic fatty acids and amides, lard oil, high molecular weight organic phosphorus and phosphoric acid esters.
-Preferential adsorption of surface-active materials.

"Performance Additives"

Pour Point Depressant
-Enable lubricant to flow at low temperatures.
-Alkylated naphthalene and phenolic polymers, polymethacrylates, maleate/fumerate copolymer esters.
-Modify wax crystal formation to reduce interlocking.

Seal Swell Agent
-Swell elastomeric seals.
-Organic phosphates and aromatic hydrocarbons.
-Chemical reaction with elastomer to cause slight swell.

Viscosity Modifier
-Reduce the rate of viscosity change with temperature.
-Polymers and copolymers of olefins, methacrylates, dienes or alkylated styrenes.
-Polymers expand with increasing temperature to counteract oil thinning.

"Protective Additives"

Antifoamant
-Prevent lubricant from forming a persistent foam.
-Silicone polymers, organic copolymers.
-Reduces surface tension to speed collapse of foam.

Antioxidant
-Retard oxidative decomposition.
-Zinc dithiophosphates, hindered phenols, aromatic amines, sulfurized phenols.
-Decompose peroxides and terminate free-radical reactions.

Metal Deactivator
-Reduce catalytic effect of metals on oxidation rate.
-Organic complexes containing nitrogen or sulfur, amines, sulfides and phosphites.
-Form inactive film on metal surfaces by complexing with metallic ions.


Not all oils are equal and you get what you pay for!

..................notice how than zinc stuff keeps popping up in different places. Ken

ZINC is the magic bullett...it is proven to work in more ways than one.

M-1 V-twin has more than any oil in the world (1800 ppm) gotta love it!

Mix...and what will happen with 20W-50 V-twin and MX4T 10W-40? (equal portions of the two products).


Mobil says they are compatable for mixing if you need high Zinc and no friction reduction agents and an "inbetween viscosity"...both exact have the exact same additive chemisty..so it is reasonable and predictable with these two specific products.

You get a 15W-45 end result...I have tried this in a friends 496 HO and the pressures were perfect...ran great...sent in UAO's after 20 hrs..."no significant wear".

If I had stock motors I would be fine with doing this...especially in areas that have ambient temps. of around 60-70 degrees...you guys in Florida during the summer...V-Twin is your baby.

Mixing 15W-50 EP with it's polymers is not as good of an idea...different chemistry.

FYI....10W-40 MX4T supposedly mixes well with conventional oil as well. I could see mixing something like Rotella 15W-40 with it in equal amounts...I know a guy who does with great results in a John Deer harvester. The heavy equiptment Deer guys love MX4T and V-Twin. I was on a blog that went on about how much longer they went before showing bearing wear.

Many have asked my official stance on naming a synthetic drive oil that is endorsed by me....this is my choice...after a year of working with boaters using several brands...this one keeps drives noticibly cooler...that will extend their life...it will not foam even with water and that is what destroys many drives. The Alphas and Bravos shift very smoothly. The product drains easilly...change it about every 50 hrs unless you race. It's what Teague uses and can see why! He is on the money with this product.


Universal Synthetic Marine Gear Lube SAE 75W/80W-90 (AGM)
High Performance lubricant engineered to meet the demands of marine applications. AMSOIL Universal Synthetic Marine Gear Lube provides:

Excellent Gear and Bearing Protection even when contaminated with 10% water
Reduced Friction and Wear
Rust and Corrosion Protection
Long Seal Life
Superior Foam Prevention

$7.70/qt from amsoil.com

Just starting using the Amsoil in my drives. Since I have already paid to order the Amsoil products at a discount. What am I giving up by using the Amsoil product in my crank case, rather than Mobil?

Suggested Amsoil Products and Applications for Offshore Use:

Amsoil SAE 20W-50 Synthetic Motorcycle Oil (MCV) $9.10/qt
Very much equal to M-1 V-twin.

Amsoil Series 2000 Synthetic 20W-50 Racing Oil (TRO) $9.25/qt
Similiar to V-twin but has friction reduction agents.

Synthetic Heavy-Duty Diesel & Marine Motor Oil (AME)
SAE 15W-40 $ 6.55/qt
Nice for Small block offshore applications.

SAE 20W-50 Synthetic High Performance Motor Oil (ARO)$7.75/qt. Similiar to M-1 15W-50

4-cycle eggbeaters..SAE 10W-40 Formula 4-Stroke®
Marine Synthetic Motor Oil (WCF) $8.10/qt

HP Injector Synthetic 2-Cycle Oil (HPI) $24.75/gal
Excellent for all outboard motors with a performance emphasis on modern direct fuel injected (DFI) technology.

Saber™ Outboard Synthetic 2-Cycle Oil ATOQT $8.95/qt
AMSOIL Saber Outboard (ATO) is formulated with exclusive AMSOIL synthetic base oils and premium additives. Can go out to 100:1 but I am personally not one to go out that far 80:1 is my personal max.

Universal Synthetic Marine Gear Lube SAE 75W/80W-90 (AGM) $ 7.70/qt

Series 2000 Synthetic Racing Grease, NLGI #2, GC/LB
$10.80/cartrige.

AMSOIL Ea Oil Filters Looks like EAO-24 is the Merc equiv. $15.75ea
(EaO Filters provide a filtering efficiency in
accordance with industry standard ISO 4548-12 of 98.7 percent at 15 microns, while competitive filters containing conventional cellulose medias range from 40 to 80 percent efficiency.)

Amsoil Gasoline Stabilizer (ASTBF) 16oz $7.65 treats 40 gallons of fuel before layup.

Amsoil Engine Fogging Oil (FOGSC) $5.45

Amsoil Engine Flush (AEFCN) $5.30
Use every season before draining oil.

P.I. Performance Improver Gasoline Additive (APIBF) 16oz $7.75
Ideal for both fuel injected and carbureted systems. Dissolves and removes fuel system deposits One ounce/10 gallons up to 6oz/gallon if gummed up.

Amsoil Series 2000 Octane Boost $8.80/bottle
Can boost octane up to 7 points depending on dose.

Amsoil.com sells WIX Oil Filters and they have a great marine dual bypass oil filter system. Their pre-luber is not bad for the money...but not my personal favorite. See Fred for that unit..

Amsoil Tattoo...priceless



Anyone can sign up to be a "dealer" for a nominal fee and get nice price reductions with no obligations.

You will not sacrifice anything using these products to answer your question. Amsoil makes good proven stuff. The only downside is dealing with online ordering and UPS delivery. No biggie,,,their promotional tactics look cheezy...but fortunately the products are not.