I've just purchased a house and I'm new at taking care of a lawn. I purchased a Troy Built 2 cycle mower and needed more oil. I bought 4 cycle oil and now the lawn mower is smoking. Did I buy the wrong oil?

Hi,
Yes you did, and what you bought can damage or ruin the emgine. But a quality name brand two cycle oil (Stihl, Echo, Poulan, etc.) Does not matter the brand just so that is the name of a manufacturer of two stroke equipment. Do not buy outboard motor oil either as those engines are water-cooled (vs. air cooled.)
Peace,
Clarke

Hi.
Yes you did and it can damage or ruin your engine. Buy a name brand two cycle oil with the name of a manufacturer of two stroke equipment on the container (ie Stihl, Echo, Poulan, etc.) Do not buy outboard motor oil; it is for watercooled engines.
Peace,
Clarke