[Jorge Delgado]

HI ALL THERE:
WINTER IS COMING IN MY COUNTRY AND IN 2 OR 3 WEEKS I HAVE TO DO MY OIL CHANGE.
I ALWAYS USE MOTUL 15/50 SEMI-SYNTHETIC BUT I WAS THINKING TO DO A CHANGE AND USE 10/40 IN WINTER TIME.
I TELL YOU THAT HERE WINTER TEMPERATURES ARE BETWEEN 5° AND 12° cent.
DO YOU THINK IT WILL WORTH IT OR NOT ?
BEST REGARDS
JORGE

 

[wrinx]

Hi Jorge

The advice we are given in the UK is to use 5 or 10w oils. 15w's are considered too thick for 16v engines, but not sure about the conditions in your country!

wrinx

 

[Chris]

Definately.
10/40 sounds better.

 

[zid]

10/40

 

[Jorge Delgado]

i was thinking so, but i have doubts because the winter temperatures aren´t too low and when i had use 10/40 I have a low oil pressure compared with the 15/50 when the motor temperatures reach 80/90 degrees.
Are you thinking the same thing ?
regards
Jorge

 

[wrinx]

I think its more to do with the stricter engineering tolerances on 16v cars and smaller oilways. Anything above 10w is too thick, this might be why you have higher oil pressure, 'cos its having trouble pushing it around wink

Incidentally, I was told by an Alfa specialist (and racer) that 155's have a problem with oil pick-up going round corners, cant remember if it was left or right. But thats another reason to use appropriate oil that can be pumped through quick enough when its needed and to keep the oil topped up.

wrinx