Hydrocruiser

A few asked to put this on for review..since we now are faced with API SM and decreased zinc and phos in oil..

Mobil-1 Redcap:

CALCIUM: 2726
MAGNESIUM: 18
PHOSPHOROUS: 1137
ZINC: 1316
BARIUM: 0

SUS VISC. @210F: 85.2
Cst Visc. @100C: 16.81
Flashpoint: 470

Silver Cap:

Silicon: M1 15W-50: 9ppm
Boron: M1 15W-50: 228ppm (Large dose of friction reducer)
Sodium: M1 15W-50: 13ppm
Magnesium: M1 15W-50: 43ppm
Calcium: M1 15W-50: 2464ppm
Phosphorus: M1 15W-50: 1193ppm
Zinc: M1 15W-50: 1315ppm
Molybdenum: M1 15W-50: 90ppm

Gold Cap:

BORON: 99
SILICON: 5
SODIUM: 4
CALCIUM: 2261
MAGNESIUM: 12
PHOSPHOROUS: 1013
ZINC: 1201

SUS VISC. @210F: 85.4
Cst Visc. @100C: 16.85
Flashpoint: 460

V-Twin 20W-50:

Moly: 63 Boron: 153 Silicon: 3 Sodium: 3 Calcium: 1901 Magnesium: 9 Phosphorus: 1231Zinc: 1393 SUS Viscosity: 99.8 Flashpoint: 515

07DominatorSS

Are those readings straight out of the bottle or is this used oil or what??

BigDaddyM

I would assume that "Virgin Oil" would indicate brand new oil that hasn't been used.... is that correct?

07DominatorSS

I guess that would make sense, I wasn't paying attention to the caption. Thanks

Hydrocruiser

Yes..all oil fresh out of the bottle.

It shows that Gold Cap is about the same as Red Cap which was an API SL and Gold Cap is is rated API SM.

V-Twin is unchanged and a very potent formulation that remains unchanged.

Hard to miss going with Gold Cap or V-twin.

Silver Cap is a slicker oil with a high dose of Boron.

whatabout1

Here's good site: http://www.calsci.com/motorcycleinfo/Oils1.html

"Another component is buffers. This is typically calcium, magnesium, or boron. These chemicals are present to neutralize any acids which form in your engine"

"Another component is emergency lubricants. This is typically zinc, phosphorous, and molybdenum. These chemicals are present in case your oil film completely breaks down, due to extreme temperatures or pressures. These chemicals are supposed to be a last resort defense against metal to metal contact in your engine. Oil companies are cutting back on zinc and phosphorous, as these metals are hard on your catalytic converters. They're substituting molybdenum disulfide, which lowers friction and improves gas mileage"

"Phosphorus was originally added to oils to help protect high pressure areas like cam lobes and crankshaft bearings, so lowering phosphorus levels is a compromise of lower pollution, perhaps at the expense of engine life"

Oil, interesting stuff

RonS

So ingredients in the oil do we want to see a lot of and which do we not want to see much of.

How do you determine what is a good oil.

minxguy

Considering the min spec for a 50wt at 210F is 85 SUS a couple of these oils just make the spec new. Remember, viscosity is your first line of defense against wear. The V-Twin is a much better oil at 210F, at 99.8 SUS it is a solid 50 and the anti wear,(zinc & phosphorus) are a bit higher. A typical PCMO (passenger car motor oil) has Z&P levels around 1000PPM or less.

Remember Z&P are sacraficial, the PPM drops as the oil is used. The flash point for the V-Twin is higher because the viscosity of the oil has the other fluids beat by a longshot. Probably a heavier centistoke PAO basestock.

Ken

Hydrocruiser

For marine use you DO want higher (1000ppm+) levels of zinc and phos. along with high detergency and corrsion resistance additives.

Gold Cap and V-Twin especially foot the bill as does Merc's semi syn.

You can get into trouble these days with lower anti-wear additive automobile and truck oils than you could before.

Hydrocruiser

The calcium is a detergent/dispersant additive, while molybdenum, phosphorus, and zinc are
all anti-wear additives. Silicon is for anti-foaming.

That's why we saw Gold Cap increase it's base PAO content because Silver Cap was having some supposed wear issues.