Comprehensive Mack lubricant qualification testing, encompassing standardized gasoline and diesel engine dynamometer tests used in the evaluation of crankcase lubricants.
Mack lubricant test qualification test methods run by Intertek Automotive Research include:
Mack T-10 and T-10A Test Methods:
- Mack T-10 and T-10A test methods evaluate the wear performance of engine oils in turbocharged and intercooled four-cycle diesel engines equipped with EGR. The test involves use of a Mack E-TECH V-MAC III diesel engine with exhaust gas recirculation (EGR). A warm-up and a 1-h break-in are followed by a two-phase test consisting of 75 h at 1800 r/min and 225 h at 1200 r/min, both at constant speed and load conditions.
- The T-10A test is similar to the T-10 test except it does not require a new engine build with each test. Instead, it is a flush-and-run setup. One primary purpose of the T-10A is to provide a 75 h low temperature MRV viscosity result.
Mack T-11 and T-11A Test Methods:
- The Mack T-11 test involves the use of a Mack E-TECH V-MAC III diesel engine with Exhaust Gas Recirculation (EGR). Two 30-min oil flushes are followed by a 252-h test at constant speed and load conditions. The V-MAC III consists of an electronically controlled fuel injection with six electronic unit pumps, using 2002 model year cylinder heads. It is an open chamber, in-line, six-cylinder, four-stroke, turbocharged, charge air-cooled, and compression ignition engine. The bore and stroke are 124 by 165 mm (4 7/8 X 6 1/2 in.), and the displacement is 12 L (728 in3). This test was developed to evaluate the viscosity increase and soot concentration (loading) performance of engine oils in turbocharged and intercooled four-cycle diesel engines equipped with EGR.
- The T-11A test equivalent to the T-11 test, with the following exceptions:
- Test length is 180 hours
- T-11 mini rotary viscometer (MRV) analysis is performed on the 180 hour oil sample
- Reduction in the amount of oil analysis performed
Mack T-12 Test Method:
- The Mack T12 test uses a Mack E-TECH V-MAC III diesel engine with Exhaust Gas Recirculation (EGR). A warm-up and a 1-h break-in are followed by a two phase test consisting of 100 h at 1800 r/min and 200 h at 1200 r/min, both at constant speed and load conditions. This test method was developed to evaluate the wear performance of engine oils in turbocharged and intercooled four-cycle diesel engines equipped with EGR and running on ultra-low sulfur diesel fuel.
Mack T-8, T-8A and T-8E Test Methods:
- The Mack T-8, T-8A and T-8E tests were developed to evaluate the soot-related viscosity increase performance of engine oils in turbocharged and intercooled four-cycle diesel engines. The tests utilize a Mack E7-350 mechanically-governed diesel engine. Tests are conducted on a flush-and-run format -- with a warm-up, a 2-h flush for each test, and then a constant speed and fuel rate input for the duration of the test. Typically, the engine is rebuilt before a reference (calibration) test.
- The T-8A test is 150 hours in duration and is currently used in the CF-4 category
- The T-8 test is 250 hours in duration and is currently used in the CG-4 category
- The T-8E test is 300 hours in duration and is currently used in the CH-4 and CI-4 categories
Other related lubricant qualification test methods include:
Contact us to see how Intertek can help your organization with Mack Lubricant Qualification Test Methods.
