[928uk] Valvoline VR1

[Donald Peach]

Many thanks, Smiffy, I will stick with the VR1. I didn't really want to 
learn that I should be spending £90.00 on 5l, so I am pleased to hear that!

Thanks,

Don.

On 24/06/2024 02:02, Paul R Smith via 928uk wrote:
> I think that should be 2023, (2013 is probably a typo,) when I pointed 
> out that finally Porsche had recognised that 928s need a -50 oil.
> And I think we recently established that the new formulation of VR1 is 
> fine.
>
> The wording about the Porsche Classic 10W-50 are Porsche marketing's 
> words, so I would suggest that the implication that it is the best, is 
> just marketing talk.
>
> The reality is that in our climate you don't need a thin "winter" 
> grade for cold starting, so a 15W-50 or 20W-50 is fine. Then consider 
> that the more viscosity modifiers an oil needs to make a bigger 
> difference between the two numbers, the shorter it's life is, then it 
> makes more sense to stick with a 20W-50.
>
> Also remember that the ZDDP doesn't start to lay down it's protection 
> until the oil is 80 plus degrees, so you need to get the engine fully 
> warm every time you use it.
>
> I would be confident that the Porsche 10W-50 is good, but probably 
> vastly overpriced at £90 for 5l. And I don't think Porsche deserve our 
> money when they recommended -40 oils for so long when we all knew that 
> the 928 needs a -50.
>
> Smiffy
>
> On 24/06/2024 00:42, Donald Peach via 928uk wrote:
> I think that at one stage Valvoline VR1 SAE 20/50 engine oli was 
> recommended for our V8s due to the high zinc content. Looking at the 
> VR1 Racing Oil now, it seems it is a new formulation, but still with a 
> high (? high enough?) zinc content. Is this still okay for the 928, or 
> should I go with the 2013 article on the 928.org site which seems to 
> suggest that the Porsche Classic 10/50 might be better?
>
> Best regards,
>
> Don.
>
>