Technical Knowledge | Ningbo MOS Chemical Co., Ltd.

Conceptual heat-exchanger exterior and coolant hoses, not a documented MOS installation or test.

Technical Knowledge · 2026-11-02

EV Coolant Conductivity: Keep Dilution and Acceptance Conditions Together

Compare EV coolant conductivity on the stated dilution, water and temperature. Keep electrical, freezing and corrosion acceptance separate.

Conceptual tractor rear hitch and external hydraulic couplings, not a fluid approval or internal sump diagram.

Technical Knowledge · 2026-10-31

UTTO vs STOU: Separate Engine Service from the Tractor Sump

UTTO is not an engine-oil authorization. Compare actual tractor circuits, manual requirements and product evidence before consolidating UTTO or STOU stock.

$Conceptual unbranded refractometer and sealed container, without a sample reading or quality claim$

Technical Knowledge · 2026-10-30

DEF Quality Testing: Why a Concentration Reading Is Only a Screen

A DEF refractometer checks concentration, not full quality. Match the sample, shipment COA and handling history before accepting fluid.

Illustrative unbranded gearbox housing; not an identified DCT model, circuit diagram or MOS installation.

Technical Knowledge · 2026-10-27

Wet vs Dry DCT: Identify the Fluid Circuit Before Ordering Oil

Separate clutch type from fluid-circuit identity when buying DCTF. Match the actual gearbox version and specification; wet or dry alone cannot determine the oil.

Illustrative process-vessel exterior and insulated pipes, not an identified MOS installation or engineering design.

Technical Knowledge · 2026-10-27

Heat Transfer Oil Temperature Ratings: Bulk, Film and Flash Point

Distinguish bulk, film and flash-point evidence when qualifying heat transfer oil. Keep method, fluid revision and heater conditions attached to the decision.

Editorial illustration of a closed hydraulic power unit beside a blank worksheet; not a viscosity test or a MOS installation.

Technical Knowledge · 2026-10-25

Viscosity Index vs Viscosity: Read a Hydraulic Oil Specification

Viscosity is temperature-specific; VI describes temperature dependence. Read hydraulic-oil data without treating either as equipment approval.

Representative closed refrigeration equipment, insulated pipes and cold-room door;not a MOS oil test or temperature guarantee

Technical Knowledge · 2026-10-22

Refrigeration Oil Pour Point vs Floc Point: Read the Test Before the Temperature

Separate the oil pour-point specimen, mixture-specific floc evidence and actual refrigeration-equipment acceptance before comparing temperature claims.

Representative closed gearbox, motor and guarded drive beside a conveyor;not a MOS installation or compatibility test

Technical Knowledge · 2026-10-22

PAG vs PAO Gear Oil: Three Checks Before a Changeover

Compare PAG and PAO gear oil by exact grade, temperature-qualified viscosity and changeover evidence;matching ISO VG alone does not approve replacement.