Oil grades

[Rikki Kitto]

I know it's been done to death on other threads this is what's maybe causing me confusion Simple question 5-30 or 5-40

[rynaqui]

I'm using a 10w50 at the moment, am I doing it wrong?

[Rikki Kitto]

Oh no more numbers to consider

[Rusty]

10w50 for a road car. 5w30 is totally wrong, 10w40 is OE spec bit may be a bit thin for a 100k+ engine & turbo.

Must be fully synthetic, many use Fuchs and Silkolene I think.

[rynaqui]

I am using Fuchs 10w50

[PeteRR]

Or Millers CFS 10W-50

[Rikki Kitto]

10w50 for a road car. 5w30 is totally wrong, 10w40 is OE spec bit may be a bit thin for a 100k+ engine & turbo.

Must be fully synthetic, many use Fuchs and Silkolene I think.

Where on earth did I get 5-30 from then, sure it was something to do with cold weather needing thinner oil and older engines needing this too. Hope I haven't caused any problems cause that's what's been in mine for the last 6 months only done a few thouusand miles but thought I'd change just because of the time it's been in there

[Cottis]

I had gone with 10w40 last time as per OE recommendations but it uses a little more oil and the turbo seems to have gone kaput, so I am changing to 10w50 and this thread just reminded me to go search out some good fully synth oil.

[Rikki Kitto]

I'm using Castrol Edge, hope this is OK

[Jamo]

a good 10W50 is what you need, dont use 10w60 it's thickness is too much

[Rikki Kitto]

Looks like I better change to 10-50 then Jamo can you change your avatar please my missus thinks I'm looking at porn
And I keep getting hypnotised by it

[Rusty]

10W60 is track day grade

5w30 is used in modern engines but these are... more modern, so tolerances, materials and design are that bit further on.

[Rikki Kitto]

I've gone with 5-40 Castrol edge, I don't thrash the car about like a loon, 80% of the time I drive nice n easy so don't think 10-50 would even get to the right temp

[mackenzie50]

Jamo can you change your avatar please my missus thinks I'm looking at porn
And I keep getting hypnotised by it

Oh no- don't change your avatar Jamo...it's very easy on the eye

[pasbogdan]

10w50 for a road car. 5w30 is totally wrong, 10w40 is OE spec bit may be a bit thin for a 100k+ engine & turbo.

Must be fully synthetic, many use Fuchs and Silkolene I think.

5w30 on my 3b.Not burning,no lifter noise,2.5 bar idle oil pressure with oil hot.
10000km without adding oil,now 5k again,and still clear.At 6-7k starts to get brown.
Bmw one.I think for std oil temp is ok in winter.
10w40 most of them are not synthetic.Mobil 10w40 when hot gets lifters out of the engine.
Castol edge 5w40 could be ok in all seasons and for power cars 10w60 in summer.