Which oil and why?

[deerman14]

Hey guys, l am looking for advise with facts as to what oil you run in your PSD, I have run royal purple in all my other vehicles to this point, but I want to make sure that I am not missing something that would be better for my 7.3, thanks....

[juggy_08@hotmail.com]

i use motorcraft 15-40 in my truck only because it has had it since new and i like to keep using the same oil the previous owners used my truck now has 170000 on it now doesnt leak oil and still runs runs like new

[rufushusky]

Originally Posted by deerman14

Hey guys, l am looking for advise with facts as to what oil you run in your PSD, I have run royal purple in all my other vehicles to this point, but I want to make sure that I am not missing something that would be better for my 7.3, thanks....

I have rotella T5 10w-30 in mine for the winter to help with cold starts, I usually run any name brand (Rotella, Delo, Delvac, Premium Blue, etc) 15w-40 in the spring through fall. Some people run 5w-40s year round but that is a little spendy to me. The 7.3, even though it is a HEUI, isn't THAT bad on oil. Any good name brand will serve you fine, the name on the bottle isn't as important as the fact it gets serviced on a regular basis and it is a C-rated oil (CI or CJ-4).

[Ryan Rønning]

Amsoil because I'm a dealer

[KA-BAR]

Hi Guys,I just wanted to thank everyone for there post in this forum.I have been having problems w /cold starts up hear in Maine,So I did a lot of reading & decided to change the weight of my oil I went to Rotella 5w40 & my truck is like a new truck (2001 F350 CCLB 7.3L w /118,000 Miles)I went out today & it was 18* out cycled the truck twice & it started right up when B4 I would have had to plug it in for 3-4hrs & still struggle to start . So thanks Guys for all your impute !

[ToMang07]

Originally Posted by KA-BAR

Hi Guys,I just wanted to thank everyone for there post in this forum.I have been having problems w /cold starts up hear in Maine,So I did a lot of reading & decided to change the weight of my oil I went to Rotella 5w40 & my truck is like a new truck (2001 F350 CCLB 7.3L w /118,000 Miles)I went out today & it was 18* out cycled the truck twice & it started right up when B4 I would have had to plug it in for 3-4hrs & still struggle to start . So thanks Guys for all your impute !

Where in ME are ya?

Just a couple things man, don't "cycle" the plugs... they stay on even after the light went out, up to a couple minutes. Cycling them does not help.

I would look into checking your glow plugs and GPR out if it is hard starting at all, as well as checking your batteries and the connections for corrosion/tightness.

[KA-BAR]

I'm in Mechanic Falls which is between Auburn & Oxford . Cool thanks for the Cycle tip , I usualy wait 2 min B4 cycling but now I dont have to , no hard starting @ all & have 2 Brand new Batts .

Im going to be putting some $ into the truck this spring not sure what I should do . I've got about 2000$ to spend not sure if I should go w/lift kit or engine mods . I've got the basics Air cleaner Mod , Gauges . What do you guys think ? Prob should start a new thread but I'll throw it out there.

[SyN]

KA-BAR: What do you mean by Air Cleaner Mod? Do You mean the Zoodad?

My first order of business would be a Very Good Filtering Cold Air Intake and 4" Turbo Back Exhaust...
1. AIS or Napa 6637/Tymar Air Intake


Oil--->Any 15W-40 will work fine as long as you live in a warm climate yr round... You have other choices as stated above.... either a 5W-40/10W-30 HDEO will work yr round with stellar results... You have made a good choice with the 5W-40... Some have gone with Mobil 0W-40 in severe cold climates... UOA always come back looking outstanding... Very Robust Oil...

If you have plans on keeping this truck for many yrs to come? Invest in a coolant filter... and ELC coolant if your truck is a 00-03

[ToMang07]

Originally Posted by KA-BAR

I'm in Mechanic Falls which is between Auburn & Oxford . Cool thanks for the Cycle tip , I usualy wait 2 min B4 cycling but now I dont have to , no hard starting @ all & have 2 Brand new Batts .

Im going to be putting some $ into the truck this spring not sure what I should do . I've got about 2000$ to spend not sure if I should go w/lift kit or engine mods . I've got the basics Air cleaner Mod , Gauges . What do you guys think ? Prob should start a new thread but I'll throw it out there.

Cool beans, I'm about 30 minutes south of you. (Bridgton area.)

IMHO, engine mods first, unless you do lots of off-roading lift kits are purely cosmetic.

An on the topic of oil... I run full synthetic (Amsoil) 15-40 year round, and have NO cold-starting issues.

[LNS4x4]

I'm in MA and use rotella t6 year round. My winter start ups are just like my summer start ups. Night and day difference running the t6.