bad piston rings or a bad cylinder all together look up a rebuilder bad piston rings or a bad cylinder all together look up a rebuilder Worn piston rings and or bad valve seals. Could be from high mileage or poor maintenance either way there is no cheap fix.
In this 1990 Toyota year, five quarts of oil are needed. If your car burns oil, you may need to add more.
There are a few variables you need to take into account. Most importantly is the temperature that the car will be operated in. If its a colder climate stick to a 5w-30, warmer maybe a 10x-30. If the car burns some oil stick with the 10w-30 otherwise 5w-30 is perfect for you. Synthetic will prolong your oil change intervals but if the car burns oil it will become expensive quickly! Synthetic oil paired with a synthetic oil filter can give you a 5000-6000 mile oil change interval compared to that of 3500 or so with "regular" oil.
Oil -- -- -- They are both essential fluids. Without gas, the car will not work. Without oil, the car will not work. However, if you run out of gas, the car can still operate as normal once you add more, while if your car's oil leaks out, or burns away, there is a greater risk of permanent mechanical failure (locking the pistons). So I would say that it's more important to maintain the oil levels in your car than it is to maintain the gas levels in your car.
Canola oil and peanut oil are foods and not hazardous materials. If you have a volume you may want to find a recycler or someone who burns it in their car after processing.
a car uses oil. it burns the oil and ,the motor pistons move when the gas is released from the burned oil to move a more mechanical thing there , which ends up as mechanical force. it uses liquid to make MECHANICAL FORCE. //petrolium
The oil spilled from a car wreck doesn't explode; it burns, slowly.
Have a look for slow oil leaks - the oil leaks then when the engine gets very hot the oil burns.
If you car does not normally use any oil there is no need to check the oil level at every fill up. Checking it once a month will suffice. However if your car burns or leaks oil checking it at every fill up may be a good idea. Reason being you do not want to run an engine that is low of oil and take a chance on doing damage to the engine from low oil pressure.
You can delay fixing the problem by using straight 40 weight or even 50 weight in the summer months, 30-40 weight in winter.
I would use 10W30 unless it burns a lot of oil, in which case I'd use 10W40. Any brand should be fine.
at high speed and old oil...
oil burns, peanuts are 50% oil