I have used Mobil-1 15W50 for years with great results. I am now changing my recommendation to use the new designation of this fine oil, which is now branded
"Mobil-1 15W50 Extended Performance" because it has 50% more zinc and phosporus and it is intended for severe use. The previous 15W50 on the market may have been the exact same product, but since branding and marketing changes do take place, I am recommending my boating friends use the EXTENDED PERFORMANCE to protect their camshafts.
http://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_Extended_Performance_15W-50.aspx
http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil_1_Extended_Performance.asp
Product Description
Mobil 1 Extended Performance 5W-20, 5W-30,10W-30, and
15W-50 are advanced performance synthetic engine oils designed to provide protection and performance at extended oil change intervals of up to 15,000 miles or 1 year, whichever comes first. Mobil 1 Extended Performance features extra performance additive that helps to provide outstanding protection during today's longer oil change intervals.
Features and Benefits
Mobil 1 Extended Performance 5W-20, 5W-30, 10W-30 and
15W-50 are made with a proprietary blend of high performance synthetic basestocks fortified with an advanced additive system, designed especially to deliver performance and protection during longer service intervals. Mobil 1 Extended Performance oils are uniquely designed to provide outstanding levels of performance, cleaning power and engine protection, even during longer oil change intervals. Mobil 1 Extended Performance oils are available in a wide range of viscosities. The 5W-20 and 5W-30 viscosities are recommended viscosity grades for newer vehicles. The 10W-30 viscosity provides excellent all-season performance and protection.
Mobil 1 Extended Performance 15W-50 is formulated to provide outstanding engine protection for high performance engines and for consumers who want a higher viscosity oil and higher anti-wear performance ( ZDDP) than typically required by modern vehicles.
Features
Advantages and Potential Benefits
Fully synthetic formula with Advanced SuperSyn System Prevents deposits and sludge build-up to enable long engine life.Excellent overall lubrication and wear protection performance under all operating conditions.
Extra levels of performance additives Provides outstanding engine protection at oil change intervals of up to 15,000 miles or 1 year, whichever comes first
Outstanding thermal and oxidation stability Exceptional control of oil breakdown ; Helps maintain stable oil viscosity
Provides exceptional engine protection Helps maintain long engine life and is compatible with engine seals.
Excellent low temperature capabilities Quick cold weather starting for fast protection and extended engine life. Provides less stress on your starting system
Applications
Mobil 1 Extended Performance engine oils are recommended for all types of modern vehicles, including high-performance turbo-charged, supercharged gasoline multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
• Mobil 1 Extended Performance oils provide guaranteed protection of critical engine parts for 15,000 miles or one year, whichever comes first. Excluded service includes: commercial and racing applications; frequent towing or hauling; extremely dusty or dirty conditions; or excessive idling.
• If your vehicle is covered by a warranty, follow the vehicle's oil life sensor or the oil change interval recommended in your owner's manual. Proper maintenance practices, including frequently checking the oil level to ensure that the appropriate amount of oil is present, are required to ensure effective performance.
• New Mobil 1 Extended Performance 5W-20 delivers the viscosity recommended for most Ford and Honda vehilces since model year 2001. It is also the viscosity recommended for many Chryslers, beginning with model year 2005.
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Specifications and Approvals
(you can see the data better at the following link
http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil_1_Extended_Performance.asp)
Mobil 1 Extended Performance meets or exceeds the following industry specifications:
5W-30
10W-30
15W-50
5W-20
ILSAC GF-4 GF-4 GF-4
API SM,SL,SJ,SH/CF SM,SL,SJ,SH/CF SM,SL,SJ,SH/CF SM,SL,SJ,SH/CF
ACEA A1,B1,A5,B5 A1,B1,A5,B5 A1,B1
Typical Properties
Mobil 1 Extended Performance
SAE Grade 5W-30 10W-30 15W-50 5W-20
Viscosity, ASTM D 445
cSt @ 40º C 61 66.1 138 47.4
cSt @ 100º C 11.0 10.7 18.0 8.9
Viscosity Index, ASTM D 2270 169 148 145 171
Sulfated Ash, wt%, ASTM D 874 1.0 1.0 1.13 1.0
HTHS Viscosity, mPa•s @ 150ºC ASTM D 4683 3.1 3.1 4.6 2.7
Pour Point, ºC, ASTM D 97 -48 -45 -42 -51
Flash Point, ºC, ASTM D 92 230 230 228 235
Density @15º C kg/l, ASTM D 4052 0.86 0.86 0.87 0.86
Mobil 1 Extended Performance 15W-50 is formulated to provide outstanding engine protection for high performance engines and for consumers who want a higher viscosity oil and higher anti-wear performance ( ZDDP) than typically required by modern vehicles.
Mobil 1 Extended Performance formulas are designed specifically for today's longer service intervals and are guaranteed to protect for up to 15,000 miles or one year.
Mobil 1 Extended Performance has a unique formulation with a boosted level of protection and performance. Mobil 1 Extended Performance, with the Advanced SuperSyn System, contains 50 percent more SuperSyn than Mobil 1. (Updated March 2006)
Mobil 1® Extended Performance is a new high-endurance motor oil with 36 percent more anti-wear additives and 37 percent more cleaning agents than current Mobil 1 formulations. Mobil 1® Extended Performance is a fully synthetic formulation that helps extend engine life, reduce oil breakdown and minimize engine wear -- all while helping to keep your engine clean. Improvements that add up to exceptional protection for 15,000 miles. Guaranteed.
• Guaranteed performance and protection for up to 15,000 miles.
• Mobil 1 technology designed for today’s longer service intervals.
• Proprietary formulation with 50 percent more SuperSyn helps keep engines running like new.
• Helps extend engine life by reducing wear and oil breakdown.
• Mobil 1 technology has been field tested over the last 20 years in the most severe driving conditions.
• Suitable for cars, vans and light trucks.
