AeroShell straight mineral oils are blended from selected high viscosity index base stocks. These oils do not contain additives except for a small quantity of pourpoint depressant (which is added when improved fluidity at very low temperature is required) and an anti - oxidant.
APPLICATIONS
The suffix for each grade corresponds to the viscosity of the oil at 210°F in Saybolt Universal Seconds.
The appropriate grades of these AeroShell Oils are approved for use in four - stroke cycle certified aircraft reciprocating piston engines (except Porsche) and other aircraft radial engines which use oil to specification SAE J - 1966 (MIL - L - 6082) and which do not require use of an oil containing a dispersant additive. AeroShell Oils are used primarily during break - in of most new or recently overhauled four - stroke cycle aviation piston engines. The duration and lubrication recommendations for break - in vary, so operators should refer to the original engine manufacturer and/or overhaul facility for specific recommendations.
SPECIFICATIONS
The U. S. Specification SAE J - 1966 replaces MIL - L - 6082E.
Although it was planned to replace the British Specification DERD 2472 with a DEF STAN specification this has now been put into abeyance and instead the SAE specification has been adopted.