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My car is due for 20K service+oil change. However, the question that i'm asking is that Ford 1.4 TDCi manual mentions to use only 5W30 diesel oil meeting Ford's WSS-M2C-913-B/C specifications. I've found out very few oils available in India meet those specifications. Namely, Castrol Magnatec 5W30 A1 FS oil. However, that oil comes with its own disadvantages, i. e. , Castrol A1 is CF grade oil. This CF grade was used for pre 2000 engines and now the modern oils have reached CJ specs. So my questions are :
1. What are these Fords WSS-M2C-913-B/C specs and why should/shouldn't we stick to them ?
2. The recommended oil viscosity is 5W30. However, the OP has mentioned that it is fine to use 5W40 oil if we do more highway/spirited driving(which I of course do :) ). What exactly should I do ?
3. How's Mobil Devlac 1 ESP in terms of Performance & NVH? This oil is CJ-4 compliant but it fails on 2 points - 1stly it s a 5W40 oil(instead of 5W30) and 2ndly it does not meet Ford's WSS-****** specs. Should I use it or not in my ride's engine ?
1. What are these Fords WSS-M2C-913-B/C specs and why should/shouldn't we stick to them ?
2. The recommended oil viscosity is 5W30. However, the OP has mentioned that it is fine to use 5W40 oil if we do more highway/spirited driving(which I of course do :) ). What exactly should I do ?
3. How's Mobil Devlac 1 ESP in terms of Performance & NVH? This oil is CJ-4 compliant but it fails on 2 points - 1stly it s a 5W40 oil(instead of 5W30) and 2ndly it does not meet Ford's WSS-****** specs. Should I use it or not in my ride's engine ?
5W-40 is perfectly fine if you do long-distance high-speed driving, actually I would say it's better for a diesel engine.
The "A1/B1" is the ACEA rating for use in Petrol (A_) and Diesel (B_) engines. SN/CF is the API rating (S_ for Petrol and C_ for Diesel). A1 is roughly equivalent to SM and B1 to CF. Also, the Castrol Magnatec 5W30 mentioned is not available in India, the Magnatec 5W30 we have is only suitable for Petrol engines. We have Magnatec 10W40 and 15W40 for Diesels or Mobil1 0W40 all of which are CF rated.
I find it odd that all these manufacturers are using an obsolete standard, you might want to check the exact specs of the oil your nearest Ford dealer is using. If it is better than CF, go for it. Otherwise, I would recommend Castrol Edge 5W40, Mobil Super 3000 X2 5W-40 or Shell Helix HX7 ECT 5W-40.
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