mobil 1 5w-50 for x5 3.0d

eddieboy2 · #1 09-02-2005, 10:37 PM

ey guys, is mobil 1 5w-50 okay for my x5 3.0 diesel?

btw i'm in the philippines (tropical country)

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X5Flyboy · #2 09-03-2005, 12:58 AM

My dealer said BMW recommends the Castrol oils as being more identical to the BMW oils - I've always been a Mobil 1 fan in my other cars and have had no engine troubles while using it.

eddieboy2 · #3 09-03-2005, 01:01 AM

Quote:

Originally Posted by burkleymh

My dealer said BMW recommends the Castrol oils as being more identical to the BMW oils - I've always been a Mobil 1 fan in my other cars and have had no engine troubles while using it.

butr what about the grade that i'm going to use? 5w-50? on the x5 3.0 diesel? is it okay?

eddieboy2 · #4 09-03-2005, 02:03 AM

need help asap!!! i'm abt to buy my oil later and change it tom... waaah!!!

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Donegal TDI · #5 09-03-2005, 09:42 AM

Oil for a diesel has extra detergents in it.
Check Mobil's web site for suitability.

withidl · #6 09-03-2005, 03:28 PM

Quote:

Originally Posted by eddieboy2

ey guys, is mobil 1 5w-50 okay for my x5 3.0 diesel?

btw i'm in the philippines (tropical country)

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Diesel engine oil requirements are considerably different than those of gasoline engines. DO NOT PUT A GASOLINE ENGINE OIL IN A DIESEL ENGINE!!

Mobil's diesel engine oils are branded as "Mobil Delvac". They're primary diesel engine oil is "Mobil Delvac 1 5W-40" which they also "re-brand" as "Mobil® 1 Truck & SUV" (I've looked at the specs on both and they are identical).

Your BMW manual will provide an oil recommendation (Castrol). As long as the Mobil oil has the same API (American Petroleum Institute) classification as the manual states you'll be OK. The API classification for both of the above Mobil oils is: API CI-4 PLUS/CI-4/CH-4/CG-4/CF-4/CF/SL/SJ

eddieboy2 · #7 09-03-2005, 10:37 PM

Quote:

Originally Posted by withidl

Diesel engine oil requirements are considerably different than those of gasoline engines. DO NOT PUT A GASOLINE ENGINE OIL IN A DIESEL ENGINE!!

Mobil's diesel engine oils are branded as "Mobil Delvac". They're primary diesel engine oil is "Mobil Delvac 1 5W-40" which they also "re-brand" as "Mobil® 1 Truck & SUV" (I've looked at the specs on both and they are identical).

Your BMW manual will provide an oil recommendation (Castrol). As long as the Mobil oil has the same API (American Petroleum Institute) classification as the manual states you'll be OK. The API classification for both of the above Mobil oils is: API CI-4 PLUS/CI-4/CH-4/CG-4/CF-4/CF/SL/SJ

ok, ok... you're messing this up...

as i've read bmw uses the same oil in their petrol and diesel engines.. right???

powers1 · #8 09-04-2005, 06:57 AM

Quote:

Originally Posted by eddieboy2

ok, ok... you're messing this up...

as i've read bmw uses the same oil in their petrol and diesel engines.. right???

You are right!Bmw do use same oil in Diesel and petrol variants......Just check your manual.Make sure you get the longlife oil as recommended in the Manual!With respect to brands,Mobil or Castrol,this is a matter of contract agreement between Bmw and the oil supplier!I have had Bmws M3 since 1988 up to now,and in the 80's and 90's Bmw recommended ONLY Mobil 1(5w 50 for my M3),since then it seems that Castrol gave BMW a better deal and thus they are using Castol Oils!I still prefer Mobil1 like a lot of people who have had Bmws for decades,I dont like Castrol because in my experience the oil has an unpleasant odour and it sends out more condensation through the oil breather pipe.......
My opinion!Stick to what it says on the Owners Manual on alternative oil grades and use Mobil1 that has the same specs.Btw the recommende viscosity is 5W 40...................
FYI Bmw use same oil for petrol and Diesel because the Diesels are Turbo and need an oil that can stand high temperatures,be able to lubricate the turbo parts that rotate at over 100,000 rpm,and will not deteriorate and block turbo oil lines!This oil needs to be synthetic based and has nothing to do with oils that are used in NORMAL diesel engines.

Donegal TDI · #9 09-04-2005, 08:35 PM

Petrol engines and diesel engines make different demands on their engine oil, so any oil that does both has to be perceived as a compromise.

powers1 · #10 09-05-2005, 06:16 AM

Quote:

Originally Posted by Donegal TDI

Petrol engines and diesel engines make different demands on their engine oil, so any oil that does both has to be perceived as a compromise.

Turbo diesel engines with latest generation Common rail injection systems have nothing to do with "normal Diesel engines",hence why Bmw recommend that you use same oil in both petrol and Diesel x5 engines.Thats what it says in the manual and fyi the Bmw recommended oil is the same as the "alternative" with the exception that they use Castrol brand at the dealers.I am not trying to create an argument!I am simply informing what is fact!Furthermore,it is imperative that you always use an oil recommended by the Manufacturer.You had an Audi Tdi ,I believe!On this car you should only
only use your preferred brand providing it states in the container the ref.VW505.01,which is a synthetic based oil with a 5W 40 grade.I have seen a few Audi/Seat/Vw cars with broken engines cause they used other oils!!....

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