Blended in the UK to Fuzz’s own formulation, its high-zinc content (1300 parts per million) makes it ideal for engines with heavily-loaded rubbing surfaces, eg cam lobes and tappets.  Made from carefully chosen base oils, Heritage stays in grade well at high temperatures – ensuring good oil pressure even under extreme usage, including racing!
Highly effective detergent additives ensure minimal levels of unwanted deposits on pistons, spark plugs and cylinder heads.
The formulation of this product is comparable to other brands costing many times more, as can be seen in the table below.
Read about Heritage 20W-50 in Practical Classics by clicking here.
Benefits
Prolonged engine life though reduced wear
Reduced sludge formation
High Shear stability for stay-in-grade performance
Improved bore polishing protection
Detailed Specification:
Specific Gravity @ 15.6C:  0.889
Kinematic Viscosity @ 100C:  20.88cSt
Kinematic Viscosity @ 40C:  189.03cSt
Viscosity Index:  131
Flash Point COC:  235C
Pour Point:  -31C
Total Base Number:  10.2mg KOH/g
Characteristics
Classic Oils Heritage 20W-50
SAE Viscosity
20W-50
Viscosity Index (VI)
131
Performance Level
API: SL / CH
Zinc as ZDDP (ppm)
1300
Base Oil Group
Grp I
Detergent-Dispersant Package
High
Other
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