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Mack E7 Engine History and Technical Information


In case you or your company possesses 2007 or even 2008 petrol pick ups or”on-road” heavy-duty gasoline trucks, then you could well be wondering the vehicle maker is indeed adamant about using motor oil that meets the American Petroleum Institute (API)”CJ 4″ specification in the motor. You might be asking yourself if you could”make do” having a engine oil that does not show this designation on the label. The response will be NO! You may not”get by” with a petrol engine meeting that the older API”CI-4″ or”CI 4 in addition” specifications at search motors. There was a high possibility that high priced damage is going to soon be the end result if you try.

Just how did all of this start? A number of ages ago, the U.S. Environmental Protection Agency (EPA) decided that starting up in the 2007 model year, strict new constraints were going to become placed around the emissions of on-road diesel motors in significant responsibility and pick up software. This would limit the amount of carbon dioxide and particulate matter generated by the exhaust pipe. The EPA determined that via a blend of engine re-design, ultra-low-sulfur petrol (ULSD) fuel and brand new engine oil technological innovation, these new vehicles will cut harmful pollution by 95 per cent.

The most essential of these engine alterations would be the addition of exhaust after-treatment apparatus and increased exhaust gas recirculation (EGR) premiums. Both of these changes required a radically different approach to formulating a diesel engine Cummins Engine Oil Seals.

The exhaust after-treatment devices being used are”diesel particulate filters”. These particulate filters remove soot in your tube permitting cleaner emissions. Collected particulate issue is cleared from the filter by burning it off in elevated operating temperatures. Elderly generations of diesel engine oils contained additives that can plug or damage particulate filters. The brand new CJ 4 engine oils have strict limits on sulfur, sulfated ash and phosphorus content. A compacted or damaged parasitic filter is not simply very expensive to wash or replace, but it could lead to severe drops in fuel economy because of increased blood pain.

Another crucial change maintained by the EPA was going to lower the sulfur content of diesel gas with way of a whopping 97%. From September 2006, the sulfur levels in gas (for on-road use) were limited to 15 pieces per million (ppm) from 500 ppm. This has been done so that the gasoline would not hurt the new exhaust after-treatment apparatus. This is really an issue to numerous as sulfur proved to be a vital additive which offered lubrication to fuel pumps and injectors. The gas firms were not faked to restore the sulfur with a different aspect of provide pump and injector lubrication. It’s a great idea to add an aftermarket fuel additive to a gas to

early pump and injector wear. This really is advisable for most diesel engines making use of ULSD gas. Make certain that the additive is designed to offer fuel system lubrication also it works with exhaust filters that are gaseous and ULSD fuel.

With all the exhaust filter getting rid of the particulate matter from your emission, the endeavor of eliminating nitrogen oxide is achieved by increasing exhaust gas recirculation (EGR) speeds by as much as 35%. EGR apparatus re-direct a number of these exhaust gases usually emitted through the exhaust pipeback in the engine. This speed growth creates far more soot and antioxidants and increasing operating temperatures. That really was just another cause of its drastic modifications within the design of this CJ 4 specification. These new hostile operating conditions need the motor have a larger resistance to heat, so a larger dispersant package deal to deal with the high rates of soot along with also a greater capability to protect against depositing and oxidation. CJ-4 oils are also less volatile which means they are more resistant to ingestion.

CJ-4 oils may supply the best in performance and protection for post-2007 diesel engines. To take out the aggravation of fleets having to stock various diesel engine monies for trucks assembled before and immediately after the 2007 model year, CJ4 oils are intended to function as”backwards compatible” with pre-2007 petrol engines. Fleet owners can stock only a single CJ 4 diesel engine oil to services most of their gas trucks.

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