Nissan Matic-D (superceeded by J if I recall correctly) Or you can use Valvoline MaxLife or Castrol TransMax Import Multi-Vehicle as they are rated for Matic-D applications
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Check to see if it is transmission oil or engine oil. If engine oil then the crankshaft oil seal needs to be replaced. If it is transmission oil, your torque converter maybe leaking. Before doing anything major try checking the hoses that connects from the transmission to the radiator. They could cracked or leaking. Some transmission use oil coolers and ATF filer on the transmission case itself. Check if they aree properly tightened.
most automatic transmission use a cooler located in a radiator tank to cool the transmission oil
check for oil pipe s in one of the tanks
Personally , I find that it is more efficient to use an air to air oil cooler for automatic transmissions as the radiators are running hard to cool both the engine and the hot oil from the transmission
As the transmission oil gets to excess of 150C the oil is never less than 100C from the radiator but using the external cooler , the temp can come down to ambient temp or less making for better oil life in the transmission
Talk with professional transmission shops to get more advice
1. Remove transmission oil pan (be careful oil will splash all over)
2. Remove all bolts slowly, so oil will drain slowly
3. Transmission oil pan gasket is reusable
4. Clean oil pan and let transmission oil drip then reinstall pan and gasket.(At the same time you can change the transmission oil filter.
5. Fill with transmission oil fluid (see specification) 4 liters Dexron4 fluid
6. Start the engine place transmission lever to park or neutral
7. At the same time remove plug (see pictures ) until fluid comes out the transmission plug hole. (replace the plug)
Transmission can malfunction due to the following reasons:
- Before blaming the transmission, engine tune up be carried out to get the maximum performance and torque.
- Wrong type of transmission oil is used.
- Improper transmission fluid oil level.
- Contaminated transmission fluid.
- Transmission oil leakage.
- Throttle control cable adjustment. (Auto transmission)
- CVT oil calibration. (CVT).
- Clutch and pressure plate and clutch slippage. (Manual transmission).
- Drive shafts.
- Transmission damaged.
There are two types of transmissions in 1991 Toyota Corolla. Manual Transmission and Automatic Transmission.
1. Manual Transmission:
The transmission oil is checked through a level bolt which is provided to the left CV joint side in the middle of transmission. To check the oil level, park the car on a level floor, remove the level bolt with 22 mm or 24 mm spanner. If the oil starts coming out of this hole the oil level is considered OK. If not, top up the oil till it starts coming out and tighten the bolt. The recommended manual transmission oil grade is 75W/ 90W and total capacity is 2.4 Litres.
2. Automatic Transmission:
Warm up the engine, park the car on level floor, pull up the hand brake, gear lever stick in P, keep the engine start, let the radiator fan come on, take the auto-transmission stick out, wipe it with a clean dust free cloth, insert it in, again take it out, keep the stick in horizontal position and check the oil level. At operating temperature the auto-transmission oil level should be at upper level (Hot). If not, add oil to mach the mark. The recommended auto-transmission oil is Automatic Transmission Fluid (ATF) Dexron II, and total (drain and refill) capacity is 1.4 Litres.
oil in the cooling system comes from a transmission oil cooler in the radiator leaking. I take it that you have an automatic transmission Normally if you have a gasket problem the water would be in the sump oil. You will need to replace the radiator to effectively fix the problem and as a side suggestion consider an air cooled transmission oil cooler for the transmission oil as it helps the car to run cooler and keeps the transmission oil cooler and extends the life of the transmission.
15w-30 engine oil and ATF transmission oil probably an atf -4 oil ring any automatic transmission shop for the oil specs make sure that it is a genuine automatic transmission and not a cv transmission ( constant velocity )transmission as using ATF oil will destroy the belt and the transmission
to replace the oil on your transmission is not that hard but as a auto technician I should advice you that if on any vehicle the transmission oil has never been changed and is a high millage vehicle by changing the oil the transmission can slip or go neutral you should take your vehicle to a transmission shop and have the oil changed there with special oil changing machine that would clean the transmission and converter while it replaces the old oil and if there's a risk on damaging the transmission then they will tell you before changing the oil on your transmission and if they change the oil and any problems should happen then they are responsible for your transmission but if you insist to change it your self by removing the oil pan on the transmission you let all the oil out some of these Japanese vehicles have a drain plug you can take the brain plug out then remove the oil pan once you remove the oil pan then you'll see the transmission filter with socket wrench using a 10 mm socket remove the filter and the same way replace it with the new filter don't over tork the screws tighten to 15 lb. then remove the old oil pan gasket and make sure by doing all this process everything is extra clean, clean out oil pan and replace gasket and install oil pan then after you finish pour in 3 qt. of good quality transmission oil then turn on engine and take the shifter to R then D and last N and with engine on check the level and add as needed good luck
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