Originally Posted by tig1
Originally Posted by High_Noon
aquariuscsm: Thanks for the reply. I am currently in El Paso, although I grew up in Dallas. I will be in Dallas soon for a few weeks.
The reason I switched from Mobil 1 15W50 is b/c it is not a true synthetic oil - it has a group III base stock.
The grp 3 thing is false. All M1 oils have a blend of base stock which includes esters and PAO and considered Grp 4. There are no oils with base stocks of PAO only. All are blends for better performance.
Actually you are wrong. Many boutiques contain only IV/V and no I,II,III. Here is one of them:
MPT Thirty-K Full Synthetic High Performance Motor Oils are all comprised of 100% synthetic ester and polyalphaolefin basestocks with no highly refined petroleum (Group I, II or III) or viscosity modifiers. MPT Thirty-K Motor Oils are fortified with the finest additives available including extra zinc and phosphorous for anti-wear, as well as special friction modifiers such as molybdenum to ensure longer engine life, reduced heat and friction, and better fuel economy.
Most motor oil companies are reluctant to reveal the composition of their motor oils. We show the superior quality of MPT Thirty-K Motor Oils clearly in the technical data below. For example, please note the higher levels of zinc, phosphorous and molybdenum in our MPT Thirty-K Motor Oils. These properties provide superior engine protection while helping to reduce heat, friction and wear. Additionally, The American Society for Testing and Materials (ASTM) tests below were conducted by an independent laboratory and exhibit the high Total Base Number (TBN) for MPT Thirty-K Motor Oils. The TBN indicates the oil or lubricants ability to suspend contaminants that can cause wear and reduce the corrosive effects of acids. MPT's high TBN combined with the naturally cleansing poly olester basestocks and proprietary additives allow MPT Thirty-K Motor Oils to be used for extended drain intervals up to 30,000 miles.
Most synthetic motor oils evaporate and thin under high heat and high shear conditions. This is where the superior basestocks of MPT Thirty-K, MPT Motorcycle and MPT Racing Oil excel. These charts show how MPT Thirty-K, in this example with 5W30, beats the competition in evaporation loss and high temperature/high shear tests. These tests are true indicators of the ability of a motor oil to reduce heat, friction and wear in high performance engines.
With a naturally high detergency and dispersants, extended drain intervals up to 30,000 miles are possible with MPT Thirty-K Motor Oils. For engines subjected to severe driving conditions such as stop and go driving, frequent short trips, turbo/super chargers, and performance modifications, we recommend no more than 15,000 miles between oil changes. Oil filters should be changed according to the manufacturer's recommendation.
Please note: MPT Thirty-K High Performance Motor Oils are formulated with a blend of ester and polyalphaolefin base stocks to achieve the proper viscosity. No viscosity modifier is added. During storage separation/settlement is expected. Please shake the container well before pouring.
