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Releasing additives into engine oil

  • US 5,718,258 A
  • Filed: 10/22/1996
  • Issued: 02/17/1998
  • Est. Priority Date: 10/22/1996
  • Status: Expired due to Term
First Claim
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1. A canister for releasing oil additives into oil in an internal combustion engine, hydraulic equipment, or automatic transmission, comprising:

  • a container having an inlet, an outlet, and an interior volume between said inlet and outlet;

    partitions dividing said interior volume into a plurality of different individual compartments;

    a plurality of discrete shapes of thermoplastic material which gradually dissolves in above ambient temperature oil, said thermoplastic material having oil properties improving additives which are released into the oil over time as said thermoplastic material dissolves; and

    said discrete shapes disposed within at least a plurality of said different individual compartments.

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