Lubricant makers are aiming to develop new testing procedures for proposed category 11 or “PC-11” engine oil to account for the potential benefits as well as risks posed by switching to new lower viscosity formulations. At the recent 2014 Technology & Maintenance Council (TMC) annual meeting in Nashville, TN, Lilo Hurtado, applications engineer at ExxonMobil, moderated a technical session that reviewed the impact of switching from the typical 15W-40 engine oils used in ...

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