Hydrocruiser ??????? oil related
 

i have a twin 496 ho motor's 2005's with 250 hour's on them i was thinking of changing to amsoil 15-40 marine oil " also for deisal motor's "
would you think this will be ok with the motor's having 250 hour's on them already . 80 % of my boating is at idail "1000 rpm and then at cruise at about 3700 rpm .
i used to use the 20-50 racing oil in my old boat with 600 inch motor i would think that mite be to much for the 496ho motor's .
i also dont want to change oil as often that's why i thought the 15-40 marine deasil oil would be a good one a lot of additive's

thank's
mike

The 15W-40 has an API rating of SL/SJ if I recall the ZDDP level is around 1400ppm it's a good choice.

M-1 Silver and GoldCap have a ZDDP level of 1200 ppm

M-1 V-Twin 20W-50 have a ZDDP level of 1600 PPM

Redline 20W-50 HP oil is at 1400 PPM

Amsoil 20W-50 ZDDP is I think 1200 ppm

Valvolione VR1 Conventional oil is at 1400 ppm


all good oils..

Yes you can get on board with a synthetic now. I would lean towards a 15W-50 or 20W-50 as the engine has loosened up with 250 hours on them.

Thank's for your help :)
mike

Wait until you see what Amsoil is coming out with soon. Trust me it is worth the wait.

well give us a clue :)

Ok Ok

3 new weights and lots of the good stuff in the mix. Think Zinc. :evilb:

Offshore motors need 1200-1600 ppm of Zinc/Phos. Sometimes adding a good does of moly decreeases the nned for ZDDP.
(That's what Volvo and Merc have always had in their oils).

Currently "automotive" oil has 800 PPM...simply not enough

Lubrizol and others are trying to come up with a new product to get the ZDDP out.
http://www.lubrizol.com/

They need a Series 3000 (very high PAO content oil base-stock) with a ZDDP concentration of 1600 ppm and a weight of 30/40 and 50.

When they cutb ack from Series 3000 to series 2000 the base stock was reduced. Grp iv to a Grp III as I recall.

I use the Series 2000 Racing 20w-50 in my HO's. Its not too much, trust me. The 15w-40 will work, but I would say use the 20w-50.

All AMSOIL is Group IV except the XL series, which is a blend. They've only had one only that is called a Series 3000, which is the HDD 5w-30 Diesel Oil. Base stock was never reduced and has always been an extremely good product.

I see that the Valvoline VR1 is listed at 1400 ZDDP. Does this mean that this conventional oil is as good as the synthetics listed? The reason I ask is because there is quite a difference in price.

The only 3000 was a diesel 5w-30. The only Amsoil that is a GrpIII is the entry level XL auto oils. The Series names are just that, "names". Do not let the names fool you. How would a "Dominator" name suit you???

As for your requests, you will be pleased I think. :D

It's a real good oil...specs are among the best of conventionals..if you chnage every 20 hrs...it's gonna be close...

so hydro, what is the best coventional oil you would reccomend? thanks mark:D

Oh it's ...Valvoline VR-1 :ernaehrung004:

thanks, ..... doesn,t valvoline make napa 20-50 premium? figured you might know.

I started running royal purple in my gibson 454's when they had about 300 hrs on them, ran until about 1000 hrs when they were washed out in a storm thru the exhaust, when I pulled them apart they looked like they had 100 on then instead of 1000, use it in everything, just the 10w30...Rob

Here you go. AMSOIL Dominator 15w-50 Race Oil. I can get it for $8.10 a qt or $92 a case plus shipping.

https://www.amsoil.com/storefront/rd50.aspx?zo=1132530

AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 15W-50 Racing Oil delivers superior performance and maximum protection in extreme conditions.
See Pricing Information or Place an Order

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
55-Gallon Drum

PRODUCT DESCRIPTION
AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 15W-50 Racing Oil delivers superior performance and maximum protection in extreme conditions. Its shear-stable formulation was engineered to provide maximum horsepower without sacrificing engine protection. Dominator Synthetic 15W-50 Racing Oil provides straight-grade protection in a multi-grade formulation.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine.

MAXIMUM DURABILITY, MAXIMUM WEAR PROTECTION
AMSOIL Dominator Synthetic Racing Oil features an additive package heavily fortified with zinc and phosphorus for superior long-term wear protection. Designed for maximum durability, it ensures critical engine components are protected for the duration of the race. Dominator Synthetic Racing Oil’s superior additive technology provides unmatched durability in extreme conditions. In addition, its high levels of zinc and phosphorus additives make it ideal for street rods, muscle cars and other vehicles with flat-tappet cams.

SUPERIOR PERFORMANCE
Dominator Synthetic Racing Oil’s proprietary friction modifier provides reduced friction for maximum power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.

PROTECTION FROM STARTUP TO THE CHECKERED FLAG
Dominator Synthetic 15W-50 Racing Oil’s multi-viscosity design provides maximum protection in temperature extremes. Dominator Racing Oil offers excellent coldstart protection and provides less drag when engine oil has not reached stable operating temperatures. It maintains superior film strength during high-temperature operation on the track.

SUPERIOR-QUALITY OILS, NO DISCRIMINATION
Many oil companies produce specialty racing oils for elite groups and do not offer them to the general public. For instance, several popular oil manufacturers produce racing oils offered only to NASCAR racers. All AMSOIL synthetic motor oils are already formulated to a higher level of performance than competitors’ oils, and AMSOIL Dominator Synthetic Racing Oil is no exception. It provides maximum performance and superior protection to all racers, regardless of their level of competition. The same AMSOIL Dominator Synthetic Racing Oil that is used in the engines of AMSOIL corporately-sponsored racers, including Scott Douglas and Brady Smith, are available to everyone.

APPLICATIONS
AMSOIL Dominator Synthetic 15W-50 Racing Oil is recommended for high-rpm, high-horsepower, turbo/supercharged, gasoline- or alcohol-burning, nitro-fueled or nitrous oxide gas-injected applications operated under severe conditions.

Applications include, but are not limited to, the following:
• Asphalt Late Model • Dirt Late Model • Modified Big Block • Ford Crate Late Model • Dodge Crate Late Model • Endurance • Rally • Sprint • Truck-Pull • Aluminum Block • Marine • Other high-performance racing and street applications requiring 50-weight oil.

AMSOIL offers WIX Racing Oil Filters for racing applications. WIX racing filters are specially designed for racing applications only.


TYPICAL TECHNICAL PROPERTIES

Dominator® Synthetic 15W-50 Racing Oil (RD50)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 17.5

Kinematic Viscosity @ 40°C, cSt (ASTM D-445) 119.6

Viscosity Index (ASTM D-2270) 162

CCS Viscosity (°C), cP (ASTM D-5293) 6695 (-20)

Pour Point °C (°F) (ASTM D-97) -36 (-33)

Flash Point °C (°F) (ASTM D-92) 234 (453)

Fire Point °C (°F) (ASTM D-92) 248 (478)

Four Ball Wear Test
(ASTM D-4172B: 40 kgf, 75°C, 1200 rpm, 1 hr), Scar, mm 0.47

Noack Volatility, % weight loss (g/100g) (ASTM D-5800) 8.0

Shear Stability Kurt Orbahn (ASTM D-6278), % viscosity change 90 cycles. 6.3

High-Temperature/High-Shear Viscosity, 150ºC, 1.4x106s-1, cP (ASTM D-5481) 5.4