Originally Posted By: GMorg
Current GC: " Exceeds ... API SL, SJ, SH, CF or CD... European ACEA: A3, B3, B4; VW 502 00, 505 00, 503 01; MB 229.1, 229.3, 229.5; BMW LL-01; GM-LLA-025, GM-LL-B-025 and the engine protection requirements of ILSAC GF-3 for API Certified Gasoline
Engine Oils."
Current TDT: "Meets or Exceeds...API CJ-4, CI-4 PLUS/CI-4/CH-4/CG-4/ SM/SL/SJ...ACEA E7/E5/ ...Caterpillar ECF-2,ECF-3"
I understand that "being approved" and "exceeding requirements" are not the same thing and would prefer to not get into topic here. The point is that if an oil can meet the VW and the MB requirements, then it if very difficult to surpass. Based on the marketing, GC appears to be a gasoline engine oil that is adequate for diesel engines and TDT appears to be a diesel oil that can meet the low zinc recommendations for gasoline engines. GC cannot meet the low zinc requirements of an SM oil.
I think that both are great formulations.
I run the older CI-4+ formula, which was the same as Delvac 1.
Mobil 1 Turbo Diesel Truck Meets or Exceeds the following industry and builder
specifications:
5W-40
API CI-4 PLUS/CI-4/CH-4/CG-4/CF-4/CF/SL/SJ X
ACEA E7/E5/E4/E3 X
Caterpillar ECF-1 X
Cummins CES 20072/20071 X
Detroit Diesel Power Guard Oil Specification X
Ford WSS-M2C171-D X
Global DHD-1 X
JASO DH-1 X
Mobil 1 Turbo Diesel Truck 5W-40 has the following builder approvals: 5W-40
Cummins CES 20078/20077/20076/20075 X
Mack EO-N Premium Plus 03, EO-M Plus X
Mercedes Benz 228.5 X
Volvo VDS-3, VDS-2 X
Mobil 1 Turbo Diesel Truck 5W-40 also recommended for use in applications
requiring:
5W-40
Renault RVI RXD X
Many have had very good results running the TDT/D1 in the VW 505.01 spec'd TDI as well.
Agreed that both are fantastic products.