Here’s a good article on the history of how the F1 standard evolved.

https://noln.net/2017/06/30/new-dies...ords-reaction/

 

F450 5w40

 

My last sample of CJ-4 PBE. Next sample will be CK-4 PBE.

 

Here is my latest:

 

Was that CJ or CK oil? Dang no TBN I was curious what the TBN would be like at 7k+ miles.

Do you do a lot of highway miles? Your flashpoint is way the heck up there.

 

This is ck valvoline 5w-40 PBX, 7100miles in 8.5 months. After reading several others having high tbn, didn’t see a need for it. I wonder if being deleted contributes to the higher flash point. Most of this is travel between Idaho and Utah, roughly 600miles every 5-7 weeks, a couple towing trips and short runs to work as well.

 

If being deleted reduces the contamination of the oil with fuel then it could lead to a higher flash point. High flash point is good.

 

Newbie to diesels (at least Ford trucks), so please bear with me and don't beat me. I have been reading all sorts of threads and posts, and I'm keen to see the informed opinions of those who use the different oils, and their experiences. In my gas burner days, I have exclusively used Castrol since the 70's based on the vast superiority of it in VW horizontal opposed engines (by my observations, and those of others, VW trained techs), up until I sold my '06 Silverado last week. Now, I am reading posts and taking in the technical observations, but I have yet to see anyone comment on Castrol Diesel. The few reviews I have found on it have all been universally pegged on the good side. Does anyone have any experience with it, or know of any comparative references I could find? Just curious - not a proponent of something I've not used, but it's been my brand for 40+ years...
Cheers,
George J

 

Castrol isn't as popular. Several of the older Fords were picky about oils due to shearing and foaming, so certain brands were popular and not many ventured out beyond what was known to work in them.

If you want info on Castrol diesel oil, check over at Bobistheoilguy forum. They can probably provide input. Otherwise, run it in your engine and get an analysis done and post it up here for all to discuss. I doubt there are any issues with the Castrol oil as long as it's made Fords newest approved list.

 

Thanks, Chris - I am going to let the dealer do it this time since I don't have time to spare, but I will check out the forum you mentioned. I'm not looking to buck success

 

Based on the used oil analysis that is coming back for Valvoline it is a very good oil to use. The moderate cost of the Valvoline is a nice bonus. Shell Rotella T6 was a very popular oil for quite some time. Their absence from Ford's approved CK-4 list raised a lot of questions. They finally did get on the list but it gave many forum members a chance to try something else.

I was a big fan of Castrol in my '91 Honda CRX. I bet that engine could have made it to 200K. But that's the last engine I used Castrol in.

 

My ex and I had a CRX when we married in '90 - got an honest, bona-fide 53 mpg on I-65 headed to New Orleans. So, the government regulated them out of existence. Rotella was an oil we used a lot off road (farm stuff) and never had an issue, gas or diesel burner. Still use it in my '51 Ford 8N...

 

Doesn't appear to be any 5w40 oil from Castrol on the approved list.


These are on the list.

Castrol Vecton Long Drain 10W-30 CK-4 10W-30 Castrol Limited

Castrol Vecton Long Drain 15W-40 CK-4 15W-40 Castrol Limited
Castrol Vecton Long Drain 15W-40 CK-4/E9 15W-40 Castrol Limited

Castrol CRB Multi 15W-40 CK-4 15W-40 Castrol Limited
Castrol Vecton 15W-40 CK-4 15W-40 Castrol Limited

 

Loved my CRX. Mine was the HF model. I got 65 MPH driving from Houston to Florida. I had to get rid of it once we started having kids. My wife got tired of riding in the back.

 

Here's my latest. Possible fuel contamination issue