Independent technical reference
Understand the API, ACEA and manufacturer standards behind modern engine oils—without the jargon.
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Start with the standard
Browse independent organizations or specifications written by vehicle manufacturers.
International and regional classifications for engine performance and oil quality.
OEM requirements designed around specific engines, service schedules and emissions systems.
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The learning path
Start with the owner’s manual and find the required viscosity and specification.
Learn what each organization or manufacturer approval actually requires.
Confirm the oil carries every required claim—viscosity alone is not enough.
Technical library
DOT brake-fluid labels describe regulated minimum performance categories, but they do not create a universal upgrade path. Learn why DOT 5.1 is not silicone fluid, why DOT 4 LV matters to modern brake controls, and why the vehicle requirement still decides.
ZF LifeguardFluid 8 and LifeguardFluid 9 are distinct service fluids for specific ZF automatic transmissions. This guide explains why the number does not simply match the number of gears, how hybrid applications complicate the choice, and how to verify the correct fluid before service.
Mercedes-Benz ATF sheets 236.14, 236.15 and 236.17 identify different approved automatic-transmission fluids. This guide explains why the numbers are not a simple upgrade path, how 7-speed and 9-speed applications differ, and how to verify an approved replacement fluid.
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Oil Specifications for iOS
Keep essential organization and manufacturer oil specifications close at hand on iPhone and iPad.
View on the App StoreBuilt for quick reference