Is 5w-40 ok for standard gti engine?

[ReflexRob]

Basically I used to have a BMW that used castrol edge 5w-40 oil and I've got some left over.

I know the manufacturers recommendation is 5w-30 but will it matter? It's vw 502 and 505 grade compliant.

Thanks

[vRSAlex]

5w40 is far better for the engines than the 5w30.

I'm not a Castrol fan so would recommend the Millers Nanodrive instead.

[ReflexRob]

Thanks,  I will switch to Millers but want to use the castrol up first rather than waste it as long as it doesn't cause harm

[rich83]

It will be fine.

[Rasco]

My manual States vw502 or vw504 for the gti I can't remember which?  but that equates to either 0w-30 or 5w-30, I use the Castrol edge stuff and I have been recommended millers but are there any others that are supposed to be better than the castrol?

[flashp]

And go for an Ester based oil whichever grade you buy. With a fully synthetic oil base they're inherently more stable ay high temps in any grade form.

[PT82]

I use Fuchs Titan Pro Race S 5w 40. Used it for years on all sorts of petrol vehicles. Expensive stuff just like Millers.