I just bought a 91 Toyota FJ80 with the 3FE engine. It has 174k miles on it. The previous owner ran Mobil 1 10w-40 but only changed 5 quarts of the 8.5 during each oil change. Weird.
The manual says to use 10w-30. Googling, I find people running 10w-30, 15w-40 and 20w-50. I want to use conventional oil, since from what I have read, this engine was never intended to run synthetic. I plan to change every 3,000 miles (yes, excessive, but I am that way with maintenance). I live in southern CA.
What weight do you think I should run?
The manual says to use 10w-30. Googling, I find people running 10w-30, 15w-40 and 20w-50. I want to use conventional oil, since from what I have read, this engine was never intended to run synthetic. I plan to change every 3,000 miles (yes, excessive, but I am that way with maintenance). I live in southern CA.
What weight do you think I should run?