Re: Marine Lubrication
 

How M-1 tested Mobil EP:

http://www.exxonmobil.com/corporate/...tml/story9.asp

"Testing the new grades

“The goal was to design these oils to perform well in difficult situations such as harsh climate extremes and different types of driving styles,” says Bill Buck, section head, Passenger Vehicle Lubrication Development, ExxonMobil Research and Engineering Company.

Starting in the laboratory, ExxonMobil researchers developed a series of relatively basic bench-top experiments to test the new grades. From there the trials progressed to more sophisticated procedures that involved real engines and simulated actual driving conditions. Once the experimental oil earned a passing grade in the lab, more strenuous exercises followed.

Still in a controlled environment, the oils were poured into the engines of cars placed on a system of rollers. Thanks to an external fuel line that never let the gas tank reach empty, the vehicles ran for 210,000 miles, with short stops every 15,000 miles for oil drains and scheduled light maintenance.

A computer-controlled program replicated some of the worst driving conditions imaginable to further push the lubricant’s capabilities. And even then, ExxonMobil scientists looked for further proof that the oils met all requirements.

The toughest test of all

“When we were sure we had gotten it right in the lab,” says Buck, “we moved to the ‘real’ test — taxicabs in Las Vegas, Nevada.”

Buck describes Las Vegas as the “gold standard for testing,” noting that, “the driving conditions there are some of the most severe in the United States. Most of the cabs run 20 to 22 hours a day, with short downtimes for refueling and a change of drivers. With daytime temperatures that can reach 110 degrees Fahrenheit, the air conditioning runs all day and puts a lot of strain on the engines. And even though most of the trips are short, an average vehicle can put on 8,000 to 10,000 very hard miles a month, with lots of idling and quick starts and stops. So it’s a good place to see how your motor oil will stand up to extraordinary punishment.”

After extensive testing, all four grades “hit the jackpot.” Across the board, the results surpassed expectations, especially in terms of oil thickening, a persistent problem experienced by lesser-quality grades" .

Re: Marine Lubrication
 

Do you ever sleep? Did you go on vacation to start a new thread? Thanks for all the info.I am burning up my printer at this very moment. :D

Re: Marine Lubrication
 

FYI:

Recent tests of Mobil-1 15W-50 EP and Mobil-1 20W-50 V-Twin:

The virgin analysis data is showing now that the two oils are very similar in additives. V-twin is a higher viscosity and holds a Visc. cST of 19.9 @ 100*C where the 15W-50 is @ 17.9.

V-Twin ZDDP.....ZInc 1823 P 1683

15W-50 EP ZDDP...Zinc 1376 P 1223

Re: Marine Lubrication
 

Vacation? :D

Re: Marine Lubrication
 

Penzoil Platinum and other info:

Pennzoil Platinum - EOP base stock and additive package produced by Shell Chemical

ethylene-alphaolefin polymer.

Re: Marine Lubrication
 

Redline's statement on extended drains with their oils:

Red Line stands alone in the ability to provide extended drain intervals and lower friction and wear. Red Line Synthetic oils have been shown to last 25,000 miles in field tests; however we recommend shorter drain intervals in order to provide a margin of safety with the oil. We recommend draining the oil between 12,000 and 18,000 miles depending on the type of service and the degree of blow-by gases contaminating the oil. High-speed freeway driving is easy on the oil due to its excellent thermal stability. If the engine is worn and if considerable stop-and-go driving is involved, 10,000-12,000 mile drains are suggested. A good rule of thumb to follow is to change the oil at least once a year regardless the mileage. Manufacturers warranty requirements should be followed while under warranty. Filters can be changed every 5,000 to 7,500 miles in order to assure filter durability is not a problem. Red Line makes a 15W40 Diesel Engine Oil for diesel engines. The diesel engine oils contain significantly greater detergency and total base number (TBN) which helps keep the engine clean. This additional detergency is not recommended for gasoline engines since it could increase the tendency for spark plug fouling. Even though the Red Line Motor Oils meet the specifications for diesel engines, the Diesel Engine Oil should be used where extended drains (10,000 miles +) are required.

Re: Marine Lubrication
 

Need a 0W-40 for a foreign car?..these passed the test..

These SHEAR STABIL 0w-40 oils do a great job as Factory fill lubricants around the world;

Addinol - UltraLight MV
Agip - Tecsint
Aral - Supertronic
BP - Visco 5000
Castrol - Formula RS
DEA - Ultec Syn-T
Mobil - M1 (SuperSyn)
Gruppa Lotos - Lotos Syntetic
Motul - 8100 Ester "E"-Tech
Motul - Synergie Ester+
Novokvibyshevsk - U Tech Sys
Shell - Helix Ultra
Spectr Auto Industries - Prolarm
Valvoline - Synpro
Valvoline - Synpower
Westfalen - Gigatron

There are more too - no Amsoil products of course because they THICKEN don't they!

Re: Marine Lubrication
 

Mobil-1 available in a 10W-40 #44980 on pull down list

http://www.autobarn.net/mobiloneep.html

Re: Marine Lubrication
 

This is a must read:

http://www.bobistheoilguy.com/basic_...ion_design.htm

Re: Marine Lubrication
 

Where I suggest you get your oil analyzed..if you choose to do so:

http://www.blackstone-labs.com/index.html