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Discussion Starter · #1 ·
Decided to give it a go following the 'improved fuel economy' spiel on the bottle (surely just the lower friction effects of a slightly less viscous lubricant?). After checking the manual and taking into account the low temperatures in the english winters I thought it couldn't hurt. (Again, lower ambiant temperatures compensating for the thinner oil I guess..)

Has anyone else tried it? Found any problems? The specific brand is Castrol GTX Magnatec. So far my Juliette is running like a swiss watch on it.
 

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5w30 is only recommended for VERY cold climates.
It may feal cold in the UK at the moment, but it isn't that cold!
 

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Would be interested to see if there is any difference in oil consumption.

Surely 30 is a bit low as the engine still runs at the same temperature once it is warmed up - only the 5w affects the cold viscosity?
 

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The oil is thinner, will it provide sufficient engine protection? The viscosity figures are arrived at by Alfa Romeo after extensive testing, knowing stresses and loads on each part of the engine.

Alfa recommend 10w60 for hard use, 10w40 for normal use. Personally I'd stick to one of those.
 

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Discussion Starter · #9 ·
rarebear said:
that says it all !!! don't think you know better than the factory :tut:
In the user manual the chart shows that below 15-10 degrees centigrade 5W/30 is fine. Therefore in the winter conditions here I shall give it a go. :p
 

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5/30 is for harsh climates! It was in my 156 when I first had it (serviced by the dealer). Oil consumption was through the roof. Changed to 10/60 SElenia recing and now doen to 250ml per 1000 hard driven miles :)
 

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Discussion Starter · #11 ·
Squadrone Rosso said:
5/30 is for harsh climates! It was in my 156 when I first had it (serviced by the dealer). Oil consumption was through the roof. Changed to 10/60 SElenia recing and now doen to 250ml per 1000 hard driven miles :)
Where do you get your Selenia from mate?
 
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