Automotive
Gear Oils - EP
90 DESCRIPTION
Castrol EP 90 is a mineral based extreme pressure multi-purpose
gear oil containing anti-oxidant, anti-corrosion and
anti-foam additives to protect against
problems due to oil oxidation, gear tooth corrosion
and oil foam. It also contain a special E.P. additive
to cope with the conditions of high rubbing pressures.
APPLICATION
Castrol EP 90 is primarily recommended for the lubrication
of conventional spiral bevel and some hypoid bevel final
drive units specifying API GL4 and
operating under moderate service conditions; but it
may also be employed to lubricate spur and helical gears,
such as used in automotive manual gearboxes,
where the manufacturer specifies the use of an E.P.
oil to API GL4.
FEATURES/BENEFITS
lExcellent oxidative stability
lGood anti-foam properties
lSuperior anti-wear performance
lImproved transmission cleanliness and resistance to
thickening
lLong oil life
lReduced wear
PERFORMANCE
API Service Level GL4
TYPICAL CHARACTERISTICS
SAE Viscosity Rating 90
Relative Density @ 20º C 0.895
Viscosity @ 40º C, mm²/s 167.2
Viscosity @ 100º C, mm²/s 16.0
Viscosity Index 98
Flash Point (closed) ºC 189
Pour Point ºC -24
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