So, in just having purchased my first diesel truck (2000 F250 7.3L) I was going to go ahead and chang the oil in my truck. Now, I live in Indiana and Its going to be winter here very soon, I figured I might go with Mobil 1 5w40 diesel oil and a mastercraft filter. I figured that the synthetic might be better for the early morning 0 degree days. If anyone has any comments, I would much appreciate it. I run Mobil 1 in my porsche and cadillac but that is what the factory recommends. Have heard nothing but good reviews about Mobil 1 though.

Please comment and let me know if this is a good choice or not.

Cyotie

 

5W-40 will be great. It's common enough to run it year round in the 7.3 and 6.0, both of which were originally specified for 15W-40. Really calms down cold starts

Minutae/personal opinion time. I recall that Mobil1 TDT carries a dual CK-4/SN rating, which means the oil has a lower 800 ppm phosphorous content for newer model emissions and is gas-engine compatible. I use Rotella T6 which does not carry the dual rating and can have a higher 1000ppm content.

Do NOT use an FA-4 rated oil - they are not backwards compatible to older years. Using Delo as an example, it will have a yellow label (versus the CK-4/SN having a red label).

https://www.api.org/news-policy-and-...ngine-oils-are
https://www.api.org/~/media/files/ce...glish_2013.pdf


Fuel-wise, Opti-Lube sells a winterizer that is mostly just an anti-gel and demulsifier. Some Midwest states (coughIllinoiscough) have higher biodesel requirements than other places, and bio is more susceptible to both clouding/gelling, and having a higher water content. If you have to run anything over B5 in the winter, I would use an additive regardless of what the state treatment laws are. In 11 years I've had one fuel problem - it was in Chicago, with diesel bought in Northern Illinois, treated with a double dose of Power Service's winter additive, and it still completely waxed up the primary fuel filter. You can make up your own mind about other types of fuel additives, but Bio + Cold for me means I will always use a supplemental anti-gel additive.
best diesel fuel additive

 

Thank you for your input. Will have to look into what the diesel grade is that I am currently filling up with. I have been purchasing Diesel from the Speedway gas station by the interstate.

 

 

I'm also a fan of Rotella T6. It's an excellent oil and can be had at a great price. If you have Menards nearby, they currently have it on sale for $19.99 a gallon, plus you get 11% back in store credit.
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https://www.menards.com/main/tools-h...6027658&ipos=1

 

Okay, the pump says the diesel there contains 15 ppm sulphur content. That's pretty much the only info it gives.

 

Get the Mobil 1, M1-210 filter or the Wix 51372X or NAPA GOLD 1372. You have to use a Synthetic media filter with synthetic oil.

 

You have to use a synthetic media filter with synthetic oil. Mobil 1. M1-210, Wix 51372XP. Wix makes NAPAs filters ask for the equivalent wix number. Only other one Id consider is a Baldwin. I dont have that synthetic filters cross ref #.