Why do my feeler guages have oil on them?
- Country BoyLv 71 decade agoBest Answer
Standard feeler gages are made of rolled steel not stainless steel. They'd corrode and rust without a protective coating.
On the surface you'd think it would be better to make feeler gages from stainless. Contrary to belief stainless is much softer but *tougher (stretching, work-hardening and machining) than steel. If you were to use stainless shim stock it would become inaccurate as far as thickness in no time.Source(s): Alignment, suspension and brake shop.
- kelly_f_1999Lv 71 decade ago
didnt clean them really oil is good like everyone said before doesnt rust up with oil
- 1 decade ago
to keep um from rusting when they rust they get thicker/thiner so when that happens it will throw off your measurment