Heavy Duty Trucking, June 2017
HDT JUNE 2017 74 WWW TRUCKINGINFO COM ticeable boost to mpg and do so without any effort or even decision making on the part of many fleets FA 4 is one of two new API donuts that started appearing on heavy duty engine oil packaging late last year the other being CK 4 CK 4 oil is the one the vast majority of fleets are now using or will be using once their stocks of CJ 4 oil are used up CK 4 oil is backward compatible for applications that originally required the use of CJ 4 oil Both CK 4 and FA 4 oils are formulated to improve resistance to aeration and to I ts too early in the game to officially say that the fuel efficiency promise of the newly rolled out API FA 4 oil service category has been met On the other hand there is enough research already in the bag to state with a high degree of certainty that this spec formulation will give a no The newest API oil service category promises to boost mpg but its use is limited to new engines By David Cullen Executive Editor dcullen@ truckinginfo com FA 4 OIL WORTH WAITING FOR SPECIAL ISSUE CUTTING FUEL COSTS The new API FA 4 oil service category was developed specifically to work in concert with the new generation of more fuel efficient heavy duty diesels starting to come on the market PHOTO SHELL OIL
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