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7.3 owners

Discussion in 'Ford Trucks' started by snowish10, Oct 17, 2014.

  1. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    What weight of oil you run during the winter and summer-- 15w40, 5w40, or 5w40 full syn?

    I run 15w40 right now, thinking about switching over to 5w40 syn. What are your thoughts on this? I have a 01 7.3, she leaks a very small amount out of the ebpv. I'm worried shes going to get more leaks with the syn.
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    15w40 amsoil
     
  3. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,663

    15w40 Rotella for the past 140k, never had any issues.
     
  4. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    I've been run rotella 15w40, but just worried about hard starts again this winter when left unplugged for a long time.
     
  5. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,663

    I am in desperate need of glow plugs. An hour plugged in and fires right up if it has been sitting. Never had any trouble cranking with Rotella even on the coldest days. Even when I get around to putting glow plugs I will still plug it in.
     
  6. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    how many miles you have on your 7.3? That only problem I had starting my truck was when it sat this winter for 7 hours when it was -11 with the wind. The other times wasnt to bad off starts.
     
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    How hard of a start
     
  8. Ray

    Ray PlowSite.com Veteran
    Messages: 153

    I started to run 5w40 all the time and since then I have never had to plug it in again! Before then if it wasn't plugged in the truck wouldn't want to start once the temps started dipping below 32.
     
  9. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    Well it was -11 wind the wind last winter, my truck sat for 7 hours. I did find out a month go i had a bad glow plug relay, so that may have had something to do with it. But it was a really hard start probably took a good 10 mins, to finally get her to turn over, but like I said it was negative 11 with the wind.

    My truck has 191500 on her now so may its time to change the glow plugs.

    The only time my truck is not plugged in is either when I go to school or not at my house.
     
  10. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 10,868

    That wind is really bad for diesels.
     
  11. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,663

    198k, 2002 F350 cclb. Started out as my tow rig for snowmobile trips. Turned it into a plow truck 6 years ago. Rust is my biggest enemy, slow taking the old girl away from me.
     
  12. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    Why you say that?
     
  13. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    Some sandblasting and some por 15 with be your bestfriend trust me. I did it to my doors and oil pan, 99% is rust free now expect for the couple areas i couldnt clean very well.
     
  14. Antlerart06

    Antlerart06 PlowSite Veteran
    Messages: 3,437

    I have a 99 F350 7.3 and always ran 15w40 never had problems starting during the deep cold spell we had last winter The only problem I had was one night it wanted to gel up Thinking its hitting 100k Its not a every day truck but during winter time its a plow truck summer time its a towing truck big loads or haul cattle
     
  15. Citytow

    Citytow Senior Member
    from phila
    Messages: 548

    15/40 MOTORCRAFT/valvo SYNTHETIC..they love it
     
  16. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    Would the synthetic make the 15w40 easier to start?
     
  17. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 11,531

    Hahaha.... We shouldn't have Diesels in the windy city.....

    Adam, the wind doesn't have a chill effect on Equipment
     
  18. Citytow

    Citytow Senior Member
    from phila
    Messages: 548

    not at all . plug that beach in . i really think it depends on the type tunes n stix ur runnin too
     
  19. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,080

    My truck loves the block heater lol
     
  20. tjctransport

    tjctransport PlowSite.com Addict
    Messages: 1,390

    15-40 valvoline all fleet. starts rite up even at 10 below , and i only plug in if i know i will be going out plowing.
    do not use synthetic if you have any kind of leak, it will find the leak and make it worse.