Mobil1 10W 40

[Viper]

i know its not quite the correct grade but an offer at Halfords £34.55

http://www.halfords.com/webapp/wcs/stores/servlet/...

[ViperDave]

this is closer, indeed i think it is even listed as recommended for cold temperatures in the viper

http://www.halfords.com/webapp/wcs/stores/servlet/...

and its cheaper, although still quite expensive compared to some sources

[V1PER]

COSTCO...Have it fo £19:99.....

[Leatherman]

How often do you recommend changing the oil given an average of about 3,000 miles per year use ??

[bigviper]

i recon every 3 to 5 thou

[Leatherman]

I had better join Costco then.

[RT/10Dave]

From what Baz reported before ( Link) the first one that Neil Posted Mobil 1 0W/40 would appear to be the better of the two.

But having said that, considering the fact that we usually use 10W/30, would the 5W/30 that Dave posted be a closer match? I've never fully understood the ratings of oils but 5W/30 would appear to be closer to 10W/30 than 0W/40.... Is that right??

Edited by RT/10Dave on Tuesday 11th November 10:27

[RT/10Dave]

V1PER said:

COSTCO...Have it fo £19:99.....

When are you going to Costco next? (I don't even know what, or where it is)

[Ginja]

I found this quote from the SRT Engineers on the VCA site (Did relate to the 2008 SRT though but should still be valid):

This question has come up a few times on this forum with some misinformation being passed along - Just for the record; 15W-50 will work fine in the 2008 engine. The only downside might be a slight drop in fuel economy (0.2 to 0.5 mpg if you can measure it or if you care!). The 0W-40 oil was selected primarily for the slight fuel economy improvement it offers and its broader operating range when compared to the older 5W-30 or 10W-30 oils. The 0W-40 is a superior product when compared to the 5W or 10W-30 oils.

The only caution is as Mark stated, make sure the 15W-50 is up to operating temperature in cool or cold climates before you run any moderate or high engine speeds (good advice in any case!). In some instances, the 15W-50 can actually improve cam control in new engines when the cam and valvetrain friction is high (for example use 15W-50 for the first oil change and the 0W-40 thereafter). The higher viscosity and shear strength improves hot oil pressure and provides more control force for the VVT system as a result. Certainly use the 15W-50 if you are on track often or in high temperature climates. Hope this clears up this question!

Search term was simply 'Mobil' if you want to look it up.

Mark

[neilsfishing]

wot about that green stuff my dad used ukams I think

[Leatherman]

I think you meant Yuckhams as it had more detergent in it than a dishwasher. Orrible stuff.

[RT/10Dave]

So the Mobil 1 0W/40 is the one to go for then by the sound of things?

[Viper Nigel]

There's some good info from Tom, F&L GoR (Fuels & Lubes Geek of the Realm) on the US VCA site about viscosity - try this link.

http://forums.viperclub.org/rt-10-gts-discussions/...

Nigel

[Leatherman]

So that confirms 0W/40 is the way to go then.