摘要:
The present invention provides an ashless lubricating oil composition that improves the corrosion properties in natural gas engines. The ashless lubricating oil composition comprises:a) a major amount of base oil of lubricating viscosity;b) from about 1 to 6 wt % of an untreated polyalkylene or polyalkenyl succinimide dispersant; andc) from about 1 to 6 wt % of a borated polyalkylene or polyalkenyl succinimide dispersant.
摘要:
A method for providing communication services for the hearing-impaired may include receiving a telephone call having a terminating number associated with a hearing-impaired party. The method may also include forwarding the telephone call to a communication assistant and establishing a communication link from the communication assistant to the hearing-impaired party based on the terminating number.
摘要:
A method for providing communication services for the hearing-impaired may include receiving a telephone call from a hearing-impaired party or a hearing party. The method may also include forwarding the telephone call to a communication assistant and establishing a communication link, such an Internet protocol link, that links the hearing-impaired party, the communication assistant and the hearing party.
摘要:
This invention is directed to an antioxidant system for use in lubricating oils comprising sulfurized isobutylene and hindered phenols that provides enhanced oxidation resistance and is particularly useful in natural gas fueled engines, the method for making this antioxidant system, lubricating oils comprising the antioxidant system and methods for lubricating engines using lubricating oil comprising this antioxidant system.
摘要:
A lubricating oil comprising a major amount of at least one of Group II, III, and IV base oil and a minor amount of 3,5-di-t-butyl 4-hydroxy phenol propionate. A method of making this lubricating oil and a method of lubricating a natural gas engine with this lubricating oil.