mcosworth

Hello guys,

i would like your opinion on this:
I use 5W40 engine oil and i have noticed that it dissapears quite fast. In a couple hundred of k's it was almost empty.
In addition when i take the foot of the gas i can see that i have a small "ball" of smoke coming from the exhaust.

Do you think the problem may be in the oil used?

I live in Portugal, so i have to take the highest temperatures in account.

What would you recomend me to use as grade for a Portuguese Cossie?

Do you think the smoke can be a result of a use of engine oil too thin?

Thanks in advance,
Miguel