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Clementine the Cat
 
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Yellow R4
 
Réparateur d'automobiles

Reno 4 Engine oil 1984

jjad

Enthusiast
Messages
1,304
Location
Herefordshire
#2
Hi Emma, welcome to the forum!

I've always used Castrol 15W40 in our 1990 GTL.

[Partly as our other car at the time used the same oil. I've continued to use 15W40 for the Renault ever since.]
 
Last edited:

malcolm

& Clementine the Cat
Staff member
Messages
4,160
Location
Bedford UK
#4
I think the recommended oil is 20W50. I often use 15W40 for cars I use in the winter as it's a thinner oil and makes starting slightly easier, but it also reduces oil pressure and I've known the red light to come on at slow hot idle. Never having fitted a gauge I don't know that the actual oil pressure is.
 
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