Norm, a reliable cheap drill now days is an ozito with a 3 year warranty - costs you $20 a year to own a drill. when it carks it take it back and swap it over.
If you want to be really clever, ask for a refund toward end of 3 years. Bunnings screw us hard enough on everything else.
The crappiest 2 stroke oil on the market (shell 2T in a yellow 200ml bottle) doesn't show up in petrol. Also has bugger all lubricating capability
