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Lubricant comparisons
Compare common lubricant specifications and viscosity grades: CI-4 vs CH-4 vs CJ-4, 15W-40 vs 20W-50, ATF vs CVT fluid, and hydraulic oil 46 vs 68.
COMPARISON
API CI-4 vs CH-4 vs CJ-4: what is the difference?
Three API heavy-duty diesel categories for different emission systems and fuel sulfur levels. Choose the category required by the engine manufacturer, not simply the newest letter.
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15W-40 vs 20W-50: which viscosity do you need?
Both are multigrade oils, but they behave differently at cold start and operating temperature. The right grade depends on the manual, climate and engine condition.
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ATF vs CVT fluid: what is the difference?
ATF and CVT fluid are designed for different transmission types and friction systems. They are not interchangeable, even if the colour looks similar.
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Hydraulic oil 46 vs 68: how to choose
ISO VG 46 and 68 are viscosity grades for hydraulic oil. The choice depends on the pump, operating temperature and start-up conditions, not on which number sounds stronger.
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