I had a weak battery and starting was slow, so i replaced the battery and all was good. About a week later, i go to turn the key and hear a click but no starting at all. I wait a few seconds and try again and it starts right up. Worked fine for a few days after that. Then a few days ago, i go to turn the key and nothing but a click at each turn - no starting. I tried for a few minutes with no luck. The engine oil was a bit low so i topped it off and then it started right up. Not sure if this was a coincidence or if there's a low oil shutoff type feature? Any ideas and advice would be greatly appreciated. I can't have intermittent starting issues and risk getting stuck somewhere...