oil recomandation

[bmw_ryder]

what oil should i choose for my E34 M20B20?
i think to switch to either ARAL or CASTROL.what do you guys recomend for me.The viscosity recomended by the manual is 10w-40 or 15w-40/50.
what oil is better for my engine,does one of the two brands leave sludge in the engine?
i ve also heard that a semisynthetic oil lubricate better than an mineral oil
thanks all!

[Espen]

Im not meaning to be an ass, but seriously, do a search.. The Big Oil question have been disscussed a lot here in the last time.

[bmw_ryder]

i've searched a lot,but i wanna know your opinion in choosing the right oil for my car
so that isn;t a hard thing to do,just post a litlle description,pls.
thanks

[BillionPa]

group 4 or 5 synthetic with lots of molybdenum and calcium in it

mineral oil has really bad film strength unless you jack up the viscosity.

Redline 5W30 will have the same film strengh as Syntec 15W50 and flow about twice as much oil over the camshafts, and will start a hell of a lot better.

[Zeuk in Oz]

what oil should i choose for my E34 M20B20?
i think to switch to either ARAL or CASTROL.what do you guys recomend for me.The viscosity recomended by the manual is 10w-40 or 15w-40/50.
what oil is better for my engine,does one of the two brands leave sludge in the engine?
i ve also heard that a semisynthetic oil lubricate better than an mineral oil
thanks all!

I use Mobil 1 : 0W-40 in my M20. No problems so far !

[632 Regal]

M1 0w-40 year round.

[shogun]

First of all complete your profile, so that we know where you live. Or tell us at least that.
You are talking about ARAL, I think that is only available in Europe?
You can certaily imagine that there is a difference in requirements if you live in Alaska or in Kenia.
We are an international board with members from all over the world.

[bmw_ryder]

First of all complete your profile, so that we know where you live. Or tell us at least that.
You are talking about ARAL, I think that is only available in Europe?
You can certaily imagine that there is a difference in requirements if you live in Alaska or in Kenia.
We are an international board with members from all over the world.

sorry man,
i live in romania,near ungaria
the climate has 4 seasons,and winter and summer are known to be with very low/high temperatures.

probably aral is available only in europe,because is a german brand,and it's a part of the BP group.

i thought about mobil 5w-40 also,but i'm afraid that it's very thin for my type of engine,and probably the engine will "eat"it sooner.
The idea is:can i use an synthetic oil in my M20 engine,without any risc of damaging the engine?

[632 Regal]

that is a fine choice for a synthetic. you have less risk of damage with a synthetic than conventional dino oil. that weight is also fine for use year round.

mobil 5w-40 also,but i'm afraid that it's very thin for my type of engine,and probably the engine will "eat"it sooner.
The idea is:can i use an synthetic oil in my M20 engine,without any risc of damaging the engine?

[shogun]

Marke: BMW
Modellreihe: 5-Series (E34)
Typ: 520i
Baujahr: 1990 bis 1991



Betriebsstoffe in Liter
Motor (engine oil), Ottomotor, 4-Takt, wassergekühlt, 2 Ventile/Zyl.
Aral BlueTronic SAE 10W-40 4,25 Liter
Aral MultiTurboral SAE 15W-40 4,25 Liter

Schaltgetriebe /manual gear
Aral Getriebeöl EP 80W 1,15
Aral Getriebeöl EP SYNTH. SAE 75W-90 1,15
Aral Getriebeöl EP Plus SAE 80W-90 1,15
Aral Fluid HGS 1,15
Aral Getriebeöl SNS SAE 75W-80 1,15
Aral Getriebeöl SNS-B SAE 75W-80 1,15

Automatikgetriebe / automatic gear
Aral Getriebeöl SGF 84 3
Aral Getriebeöl ATF 22 3
Aral Getriebeöl ATF 55 3
Aral Getriebeöl ATF E-S 3

Hinterachsgetriebe/differential with limited slip, Ausgleichgetriebe mit begrenztem Schlupf
Aral Getriebeöl BS-LSX SAE 75W-140 1,7

Hinterachsgetriebe
Aral Getriebeöl BS SAE 75W-90 1,7

Servolenkung
Aral Getriebeöl SGF 84 1,2
Aral Getriebeöl ATF 22 1,2
Aral Getriebeöl ATF 55 1,2
Aral Getriebeöl ATF E-S 1,2

Hydrauliksystem Bremsen/Kupplung /brakes /clutch
Aral Bremsflüssigkeit HS DOT 4
Aral Bremsflüssigkeit HS DOT 4 Super
Aral Bremsflüssigkeit XHS DOT 5.1

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