Lubes for EPA Tier 4 four-strokes
ExxonMobil has introduced a new zinc-free lubricant intended for use with the latest medium speed and high speed marine engines, including those that comply with the US EPA Tier 4 emissions requirements.
The new Mobilgard 410 NC is said to offer an improvement in piston cleanliness of up to 20%, a reduction in liner wear of up to 50% and a significant enhancement in bearing protection compared to a typical current Tier 3 lubricant, figures that were obtained from field trials with GE 7FDL and EMD SD70M-2 engines using a severe duty cycle. ExxonMobil claims that the new oil helps maximise the performance of a number of engine types, including newer designs that comply with US Environmental Protection Agency (EPA) Tier 4.
The company says it carried out extensive testing, in extreme service conditions, with both EMD and GE Marine engines. Mobilgard 410 NC is claimed to have demonstrated significantly better performance than current lubricants in a number of critical performance areas. Based on these field trials Mobilgard 410 NC is now approved for use in EMD and GE engines. It also meets the requirements for Detroit Diesel, Alco and Fairbanks Morse marine diesel units.
According to ExxonMobil, Mobilgard 410 NC is compatible with Tier 4 medium and high-speed marine diesel engines designed to meet the upcoming EPA requirements, which are being phased in from 1 Jan 2015, depending on vessel and engine type. The regulation states that new medium- and high-speed marine diesel engines must significantly reduce emission output of nitrogen oxide (NOx) and diesel particulate matter (PM), compared with predecessor units. The company says that to meet these requirements, marine operators will require advanced lubricants that are compatible with Tier 4 engine technologies and their aftermarket treatment devices.
“As more Tier IV engines enter the marketplace, the versatility of Mobilgard 410 NC will be even more valuable,” said Scott Murphy, Americas sales manager, ExxonMobil Marine Fuels and Lubricants. “The new lubricant also delivers outstanding performance and component protection for a wide range of aftermarket treatment devices commonly used in Tier IV engines, including EGR or SCR. In addition, Mobilgard 410 NC is compatible with alternative fuels such as LNG and biodiesel.”
Mobilgard 410 NC will replace Mobilgard 409 NC in all US and Canadian locations.
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