The Most Trusted Engine Oil Heater
For Cold-Weather Starts

Fluid Reservoir Heater


The present invention is directed to a fluid warming container (a.k.a., cassette) having an integrated heating element attached to the container, not the warming device as conventionally done. The heating element provides thermal energy to the fluid reservoir in the container. The fluid reservoir in the container is designed to be injected and/or delivered, eventually and normally immediately, into an engine.

The fluid reservoir heater must be placed at the bottom of the vesselbelow the fluid level.

Wolverine Heaters provide economic heating solutions for your many and varied fluid reservoir heater needs.


Dear Sir,

Some months ago I purchased a sump heater from you. I can tell you its fantastic. I live in Western Australia in the wheat belt where in winter the temp drops only to -3 but the oil in my engine is nice & warm, The engine heats to op temp so much faster now saving me lots of $$$$ on petrol i.e. running a rich mixture to op temp. The EFI unit only puts in the fuel required so the faster warm-up the more fuel I save. Great product & thanks a lot...


Andrew Camden

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