Top Ring Reversal

1-flV "»M»""» ■■>«!- «y. ^ • Iji^.-y

"PRTJRt exhaust front

«shk^haust front

"^rrror

exhaust front

Mimbm front

Mimbm exhaust front

Multigrade Low Temperature Performance

1sw-40 Syn ww

Straight Grade Volatility iu

% EVAPORATION LOSS AT JOOT <22 HOURS) U

% EVAPORATION LOSS AT JOOT <22 HOURS) U

15W-4D WW uwmcant

Deposits due to "metal" containing additives in crankcase oil

Top compression ring on three different engine builds. Build 1 - Moderate wear after 70 hours of operation at 700°F TRR Build 2 - High wear after 70 hours of operation at 700°F TRR Build 3 - Low wear after 275 hours of operation at 750-800°F TRR

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