oil type, please help me

[crazeeeee]

I have just aquired an old 'B' reg Monty is very good condition in my views but I want to give the engine a complete overhaul.
I am not sure what grade of oil to use put in the engine for best results.
:banghead:
I am also searching for further info on the small oil reservoir located in the middle of the air filter housing. What is this actually for and what do I use to top it up with.
This is my first Montego project and I want to ensure that the engine runs perfectly before removal.
Thanks in advance for any assistance.

Rob.

[tony]

as to the oil austin rover specify a 10w/40 oil ,.hope that helps:) wellcome to the club

[MaestroMatt]

The "oil reservoir" in the centre of the air filter is the carburettor dashpot. If this is not full enough then it will affect performance by a greater amount than you would imagine! Top this up to the level of the top of the hollow rod with either 10W40 engine oil or - some reccomend - automatic transmission fluid. I generally use engine oil and it is fine. For no good reason, the level drops over about a month or so - top up regularly.