Independent Technical Library

LubeGuide Knowledge Base

Search neutral, practical guides to oil specifications, viscosity, additives, base oils, filtration, and automotive maintenance.

LubeGuide Technical Library

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OEM approvals, industry requirements, transmission fluids, and verification guidance.

API, SAE, ILSAC, JASO, ACEA, and ASTM categories and test methods.

SAE and ISO grades, viscosity index, HTHS, temperature, and lubrication regimes.

Detergents, dispersants, ZDDP, anti-wear chemistry, antioxidants, and fuel detergency.

API Groups I–V, Group III hydrocracked oil, PAO, and formulation tradeoffs.

Oil intervals, winter diesel, emissions systems, fuel measurement, and diagnosis.

Conventional, synthetic blend, full synthetic, and two-stroke applications.

Filter fitment, micron ratings, beta ratios, efficiency, capacity, and bypass.

Viscosity index, fuel economy, and engine-overhead calculators with technical guidance.

Plain-language definitions for lubrication, oil testing, additives, filtration, and standards.

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