Mobil oil with API CF specs?

[Panzerman]

I was reading the back of some Mobil 5000 and noticed it said Diesel approved API CF/CD. Wouldnt this mean a higher detergent and TBN, to get to diesel specs, its on the Mobil 1 too. No other regular "CAR" oil, such as Valvoline or Castrol claim to have it. Valvoline even goes to say their all climate is not suitable for diesels. This was on Mobil 5000 5w20 oil yet. 5w20 diesel approved? Makes me wonder.

 

[flatlandtacoma]

CF is a pretty old diesel spec. Lots of oils have SM/CF on the label, including Valvoline Durablend and even Supertech Synthetic. No extra adds are apparent in the VOAs of those oils.

 

[hominid7]

All the Mobil 5000 oils carry the SM/CF rating. The CF rating was introduced in 1994. It is still technically valid and considered 'current' but has since been surpassed by newer deisel ratings CG, CH, CI, and finally CJ-4.

Valvoline AllClimate may or may not meet CF, i suspect most SM gas oils do in fact meet SM they are just not marketed as such.

Valvolines "Blue" deisel oil meets: API CJ-4, API CI-4 Plus, API CI-4, API CH-4,CG-4, CF-4, CF / SM, the performance requirements of ACEA E3-96, E5-02, E7-04 and the engine requirements of DB 228.3 ,MTU Type 2/Type 1, DDC 2000/4000 Series Type2/Type 1, MAN 3275, MAN 271, Caterpillar ECF-3 and Global DHD-1

 

[jorton]

Is CF the req spec for late model diesels like VW, MB, Powerstroke or Cummins? If not, of what use is 5000's CF approval claim?

 

[92saturnsl2]

No, CF is an outdated spec.

Newer diesels usually require their own approved oil (such as VW 502, etc), though most (especially diesel trucks) allow the use of the latest API cert, which is currently CI-4+(?).

Example given, if you have a 1999 Dodge Cummins Turbodiesel, you'd have to use CH-4 or later (or whatever the current spec was in 1999.)

Like mentioned earlier CF dates back to 1994, so using Mobil 5000 in any late model diesel would certainly void warranties. No real reason why they put CF on there other than to add an additional specification.