Delvac 1 is the same thing and might be more available. There is no standard definition of what a synthetic oil is, so it is helpful to know what you are getting. Mobil or Delvac 1 is a good oil, especially for winter. Some folks like to run non-synthetic for the first couple hundred hours until the engine has broken in, but in severe cold the 5w40 will aid in starting.
Mobile 1 synthetic Diesel truck 5W40
- Thread starter andrewj
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ihookem
Gold Member
5w is good stuff in winter. I started mine today and it was -7 yesterday. It started right up and has been outside all winter. It is going down to -20 in a few days and will give the Amsoil 5w30 hdd the true test. I bet it starts.
Sully2
Veteran Member
Its one of the reasons why I went to it. I can even buy it at truck stops
AKfish
Super Member
- Joined
- Oct 1, 2004
- Messages
- 5,419
- Location
- Alaska
- Tractor
- JD 5115M; JD 110 TLB; JD 4720; Ford 9N; JD X300R
We're just coming out the backside of 17 days of below zero weather.. Lot's of minus 30F and -35F nights. ('Course the guys a little farther north were in the middle of minus 50F and -60F!!)
I'm running Mobil One Turbo Diesel in my diesel engines at this time. I've used Rotella Synthetic and Mobil Delo 400 15W-40 in the past.It's been my experience with Mobil 1 synthetic and Rotella snythetic that at very cold temps the Mobil 1 doesn't get as thick and makes for easier cold starts (but at -35F there's no "easy" starts). The Rotella is a bit cheaper per gallon ($20 gal. vs $26 gal.; Wally's) than Mobil 1 so, I switch to it for spring-summer-fall field work.
Checked into the Deere synthetic with my dealer. He quoted me a few cents over $22/gal. for a 5gal pail. When I work thru my oil stockpile - I'll likely switch over for a trial run and see how it goes.
AKfish
dmccarty
Super Star Member
I just put the JD 0w40 in the F350 and in the JD 4700.
There was a huge difference when starting the truck in cold weather going from the 15w40 to 5w40. There is a very noticable difference with the 0w40. The engine acts like it does when its warmer outside. Going to be interesting if the mpg goes up a bit. I got about 3% better mpg going from 15w40 to 5w40.
I used to hook up the block heater when using the 15w40 oil because the truck just sounded horrible starting up i the cold. Powering that 1500 watt engine block heater for three hours a day 20 days a month THAT was expensive.
Later,
Dan
There was a huge difference when starting the truck in cold weather going from the 15w40 to 5w40. There is a very noticable difference with the 0w40. The engine acts like it does when its warmer outside. Going to be interesting if the mpg goes up a bit. I got about 3% better mpg going from 15w40 to 5w40.
I used to hook up the block heater when using the 15w40 oil because the truck just sounded horrible starting up i the cold. Powering that 1500 watt engine block heater for three hours a day 20 days a month THAT was expensive.
Later,
Dan
I have used the Mobile 1 5W-40 in my JD2210 for a little over a year now and am very satisfied with it. However as many have stated, it can be hard to find. I have enough for my next change, but will probably switch to the Deere 0W-40 synthetic after that, as I have read nothing but good comments about it.
