[gumby79]

Originally Posted by cRiPpLe_rOoStEr

Interesting, but how would you make sure it could withstand to the risk of damage in such location?

On my truck , the drain hole is within a 1/2" of the bottom of the frame, the drain valve is protruding , at risk of damage.
So I looked at building my own coil/device. All the counter top cookers I found were 2-4"thick
I found it is a simple circuit 9 components in the previous link.and redy made drivers are an off the shelf itom
I started looking for an alternatives to the heat prone water cooled pipe they used and found,
wiki Litz wire

Also called induction wire.
This allows for a coil ,0072"(3strands x44ga) up to 21,000 strands of 30ga over 1" thick. Eact strand is insulated magnet wire, so each strand can be a separate circuit if desired.
Avaliable in many configurations round , square , and rectangular, small gage strands helps reduce heating in the coil caused by skin effect raising the resistance/coil heating at high frequency. My guss (input welcome) is to start with 10ga litz wire. I ordered some Litz Wire Enameled copper wire twisted-pair size：0.1mm X 150 shares. AWG 38 X 150 Strands . Copper core cross-sectional area: 1.178 square mm.

To solve the possibility of an opossum undoing the work .
1)I'm thinking of wrapping the oil filter with a sleeve, pvc for easy removal and not have to rewrap the coil every oil change.
Wrap the litz coil around pvc.with thermistors on both sides of pvc for temperature control.
A Ferris sleeve. Coverd by stainless steel or aluminum (outer sleeves are to form a magnetic shielding if nessasary.) The alternator is a few inches away for me so at least a simple pice of sheat metal is nessasary to shild it . One would have to use a thermal camera to see the heating effects on other components.


2) seting up a coil 3-10 turns around the vertical sides of the pan
I found this article that gose over my head(help needed) on how to set up and the technical effect of modifications to the circuitry /power supply. High Frequency Induction Heating

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Teoman
An induction heater has limited range. The cook top I used in the past ~ 1-2" and would shutdown for lack of cook wear.