E34 M5 Engine Oil Help!

[BIGJO]

Hello people, i'm new here & was wondering if anyone could give me a bit of advice on which oil to choose. The previous owner used 20w50 Castrol i think. Finding it hard to locate any good 20w50 oils.

Any alternatives?

Many thanks, BJ.

[Jr ///M5]

Depends on where you're from BJ....if you're in the US, use Mobil 1 15w50 synthetic extended service (15000 mile oil). But change it at regular intervals and not at 15000..=)

I just changed the oil in my M5 yesterday, I found 6 quarts of Mobil 1 15w50 synthetic at Target for $2 a quart on closeout, the parts stores get over $5 a quart.

If you're looking for "Dino" oil, you still need at least 15w50...

[BIGJO]

Depends on where you're from BJ....if you're in the US, use Mobil 1 15w50 synthetic extended service (15000 mile oil). But change it at regular intervals and not at 15000..=)

I just changed the oil in my M5 yesterday, I found 6 quarts of Mobil 1 15w50 synthetic at Target for $2 a quart on closeout, the parts stores get over $5 a quart.

If you're looking for "Dino" oil, you still need at least 15w50...

I'm from the UK mate (London) & was considering the Mobil 1 as my mate recommended it. However, i'm finding it hard findind 20w50.

Is it impossible to find?

Regards, BJ.

[Jr ///M5]

If you're intended to use Dino 20w50, sometimes it's not stocked on the shelves. You have to ask the counter guy, or maybe they will order it for you. I know that's the case with the Mobil 1 0w40 I run in the 318iS.

Although regular changed Dino in the M5 is sufficient, most of the M5 owners I know use Mobil 1. (except Anthony)...

Jr

[Anthony (M5 in Calgary)]

Check www.m5board.com

All of those hard core guys swear by the Castrol TWS(?) 10W60.

I use RedLine 10W40 in mine. (Jr doesn't know me )

Also - change out your timing chain tensioner before Wout gets ya!

[632 Regal]

i run Mobil 1 0w-40 year round, it flows great at low temps.

[BIGJO]

If you're intended to use Dino 20w50, sometimes it's not stocked on the shelves. You have to ask the counter guy, or maybe they will order it for you. I know that's the case with the Mobil 1 0w40 I run in the 318iS.

Although regular changed Dino in the M5 is sufficient, most of the M5 owners I know use Mobil 1.

Jr

Okay, i was considering using the Mobil1 Motorsport 15w-50.

http://www.opieoils.co.uk/performanc...nts/mobil.aspx

That's still not 20w50 though. The previous owners used 20w50 on my bad boy. Just thinking where i can get it from at a reasonable price?

I settled with Castrol 15w40 high mileage earlier.

Thanks for your time buddy.

Regards, BJ.

[BillionPa]

for the M5, 10W60 castrol or 10W40 redline as Anthony says is probably the best match, a 20wt when cold oil is rather thick, especially for the UK and will increase the amount of cold start wear.

if you lived in Texas that would be another story.

[stu1]

Whats with the oil this weekend? Anyway, Mobil 1 0w-40.

[VentoGT]

DONT USE ZERO WEIGHT FOR THE E34 M5. Don't use anything less than 10 weight, I run Mobil 1 15-50. The tolerances in the S38 motor are very different to today's tolerances. Go to m5board.com as mentioned above and search by "oil".