Glossary
- HC
-
Hydrocarbons
- HCCI
-
Homogeneous Charge Compression Ignition
- HCFC
-
Hydrochlorofluorocarbon
- HD
-
Heavy-Duty (vehicle or lubricant)
- HDD
-
Heavy-Duty Diesel
- HDDEO
-
Heavy-Duty Diesel Engine Oil
- HDEOCP
-
Heavy-Duty Engine Oil Classification Panel
- HDS
-
Hydrogenated Styrene Diene
- HEUI
-
Hydraulically Actuated Electronically Controlled Unit Injectors
- HEV
-
Hybrid Electric Vehicles
- HFC
-
Hydrofluorocarbon
- HFFI
-
Heavy Fuel Flow Improver
- HFO
-
Heavy Fuel Oil
- HFRR
-
High Frequency Reciprocating Rig
- HGO
-
Heating Gas Oil
- HP
-
Horsepower
- HSD
-
Hydrogenated Styrene Diene
- HSDI
-
High Speed Direct Injection (diesel engine)
- HSE
-
Health, Safety, Environment
- HSE (UK)
-
Health and Safety Executive
- HTHS
-
High Temperature High Shear
- HTHSV
-
High Temperature High Shear Viscosity
- HVO
-
Hydrogenated Vegetable Oil
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