Past owner was using a Canadian General Electric 850W/120V portable heater. I think it's an old car heater from the 80s-90s, I'm more worried about this thing catching fire to be honest. Owner said that he'd put it under the cowling for about 8-10 hours before flight and get the compartment heated around 60 degrees F before starting the engine. I've been looking into the different Tanis systems as an alternative. I'm a bit confused on what I could install myself without needing a certified mechanic. I realize there's some systems with cylinder probes, which seem like they'd need to be installed by an A&P to me (for certification or w/e), but what do I know... However, they also have the part that's just an oil sump heater, which seems like it's totally something an average person would be capable of installing without any problems.
I don't plan on starting the airplane in any weather that's below 10 degrees F, it's just not weather which I really care to fly in. So with that being said, would the oil sump heater be enough to preheat the engine to working conditions in those temperatures? I don't want to make any assumptions, I've read quite a bit on these forums but haven't come to a conclusive argument. I'm not looking for a right/wrong, but more of a middle-line. Obviously I'd be better off with the additional cylinder probes.. but if this is going to cost a lot of extra jingle to install, then I might not go for it this year, as I have a lot of other things on my agenda already. This is more of a question for the time-being.. and also what I am allowed / not allowed to do as a NON-A&P owner. Somewhat seems like preventative maintenance in some ways to me, but then again what do I know. =D
Thanks


