Keep an eye on your dipstick.
Don't let it go below the Low mark.
There is 1 liter of oil from the low mark to the full mark on the dipstick.
The oil burning starts off slowly and there is no smoke, then it progresses to the point where you burn a quart of oil with every tank of gas and you'll fog out the entire neighborhood.
I started with seafoam just after I got my car in 2009 after joining this forum and reading about the oil burning issue.
Some guys were using synthetic oil and going the recommended 10,000 miles before an oil change and they started to burn oil.
I just use regular Dino oil and change it every 3000 miles along with the seafoam.
I also put a shot in with the gas with every fillup as well, to help keep the injectors and combustion chambers clean.
There are other products available but some "engine flush" treatments are caustic and can eat away at engine seals and such.