Plastic Filler Cap
Hi Morteen,
I searched for a long time before I guessed this piece of plastic (below) must be the filler, no other hex bolt like on the older 903. There is only 1 (inverted) hex bolt on my C514 box and that’s the drain - no documentation of this in Haynes or Porter manual.
I changed the Transmission oil twice in a week (ran with cheep stuff for 2 days to flush the box after looking at minging oil and dirt in filler / cap).
As I was not 100% sure this was the correct fill point, I drained the box, replaced the drain plug and added the spare 0.6L, checked for leaks, then when I removed drain plug again, this oil drained. Since first refill there has been no leaks; the second drain was also successful.
The raised turret dose not leak Oil to signal box is full when on the flat, but after overfilling mine, a bit leaked out going up a hill (through this poor non-sealing piece of plastic), then it burned off when it hit the exhaust (A bit like Spy Hunter on Commodore 64).
I assumed all post 1992 (UK) 1.0IE and 1.1IE Unos have C514 box (Could be wrong). This may explain why the Porter manual and the FIAT owner handbook disagree about which oil to use for these models while the Haynes manual dos not specify.
I ended up trusting the guy at the FIAT parts desk re transmission oil and its half the price of the Castrol stuff at Halfords. I did not want to look silly asking where to put the oil.
Louie Bee.