howdy, i just purchased a 1984 toyota corolla with an '84 camry diesel engine in it. the previous owner said it was due for an oil change, but when i looked in the service manual for what type of oil to use it only says API SF/CC. i don't know what SF/CC means and neither has anyone who works at any auto parts stores i've been to. i have been told completely contradicting things by different workers, such as 10W-30,
15W-40 (someone else told me this was too thick and could lock the engine up), but i finally ended up going with a synthetic 5W-40. if anyone has good reason to think that this blend might cause me problems, please let me know. any advice is appreciated. thanksnathan hall