You seem to have exactly the same problem I have. I also have a '93 Tercel, only mine has 125K miles on it. When I bought the car in '02 it had 89K miles. It used a little oil when I bought it, but it's gotten noticeably worse within the last 6 months. When I first bought the car, it would use about 1/4 of a quart per tank of gas and it appeared to only puff out smoke during cold starts (which is also an indication of vavle stem seal leakage). Now it uses between 1/2 to 3/4 of a quart per tank full. I am currently at the 1500 mile mark of the first cleansing cycle using Auto RX and there hasn't been any change in consumption. I still have to do two rinse cycles and another cleansing cycle, so the ARX process is still a long ways from being completed. I'm starting to get the feeling that my problem is due to some kind of mechanical wear that can't be resolved by using ARX, but I fully intend to complete the process before coming to any final conclusions. I'm also getting the feeling that the 1.5 liter engines Toyota put in these Tercels aren't built quite as well as some of their other engines that will typically go 200K miles or more without any oil consumption problems. Even if the ARX doesn't cure the problem, I intend to continue driving this car until the problem gets so bad that I'm either having to change the spark plugs once a month, or I can't drive around the block without having to stop to add oil. As it is right now, the engine runs fine and still has plenty of power and I see no reason to stop driving it. It's still very reliable.
I don't think anyone here is saying ARX isn't a good product or that it doesn't do what its intended to do. I decided to use it because I have an oil consumption problem and I don't know what's causing it and I'm hoping it's just something minor that ARX can cure. I don't think anyone in this forum would expect ARX to cure a problem caused by engine parts that are worn or damaged. I'm hoping my problem is something like gummed up oil rings or seals that simply need re-juvinating. I certainly don't expect ARX to cure a worn out engine.
