What type of motor oil do I put in a 1993 Toyota Corolla?

It doesn't say in my car manual. I just bought this car, it has 250,000 miles, but seems to run well. Naturally, I forgot to ask the previous this question. Thanks for your helpWhat type of motor oil do I put in a 1993 Toyota Corolla?
If it doesn't burn any oil - and mine never did after 180K miles, you can use 5-30 for added mileage. No sticker on the windshield from past garages? The high mileage brands and synthetics couldn't hurt but will cost more. How long do you plan on keeping it? Any sign the motor was rebuilt? If it was, then perhaps you can use a lower viscosity oil. A pressure check of each cylinder could give you a good idea of the internal condition of the rings.What type of motor oil do I put in a 1993 Toyota Corolla?
Castrol High milage 20 \ 50wt
If you don't know what oil is in it now, don't add any oil in it until you do an oil change.
I concur with John Paul...20-50
id use a good Mobil one synthetic oil in it,its designed for higher mileage engines,and it will help the engine last a lot longer,those are good cars,take care of it and keep the oil changed real good in it and you may get 3-400 k out of it,i have seen them last that long,but maintenance is the key to any car lasting good,take care of it ,and it may last a real long time,good luck hope this helps.