I can't be arsed cleaning the bikes at the best of times. But I've not touched them over the last couple of months while doing my bathroom. The winter road grime appears to have welded onto the engine. Any suggestions for a good cleaning product? I've tried cleaning gel/wax, chrome cleaner, some AutoGlym Bike grime/salt cleaning thingie, mountain bike Muck Off. I'd thought that using some Scottoiler FS365 would have given me a sporting chance, but I guess it's no use if left in the bottle for a couple of months ;) Tim B