26-07-2022, 02:03 PM
The only problem with having a piece of cardboard or polythene under the engine is that in windy weather many would end up blowing about, potentially causing more of a problem. Whilst it is quite difficult to make an Austin 7 engine absolutely oil-tight, a well maintained car should drop very little oil. I would not want a large drip tray under mine, to my mind that is not tackling the problem. There is probably less work involved fitting a decent aluminium sump and silicon gasket than fabricating and fitting a large undertray. If there are serious leaks from other parts of the engine then perhaps it's time to whip the engine out and fix it?