An improvement in an oil filler funnel cap that replaces the normal oil filler cap on internal combustion engines. The improved filler funnel cap is adjustable to fit a variety of different size oil filler openings forming an enlarged funnel receptacle with a resilient sealing closure.
An oil filler device mounted on an internal combustion engine by insertion into an oil access opening within said engine, said oil filler device comprising a funnel cap having a continuous side wall, a contoured bottom and an interconnected tubular extension extending therefrom, means for sealingly engaging said tubular extension within said oil access opening comprising, a resilient insert spacer and a retaining nut and bolt assembly in communication with said funnel cap and said oil access opening, a plurality of annularly spaced tapered engagement rib...
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