rotarydragon
Full Access Member
Ran Delo in a fleet of 3208 Cats and NTC Cummins and never had an oil related failure. It was a red color back then, oddly enough.
Oil Consumption Debacle
- Thread starter Thewespaul
- Start date
I'm old skool. Delo 400 15-40. it's avail everywhere if I need it.
ran rotella briefly and got oil consumption issues. went back to Delo.
done.
ran rotella briefly and got oil consumption issues. went back to Delo.
done.
madpogue
Full Access Member
Um, 5w40 is not thinner than 15w40 at running temperature. Burning a gallon of oil in 600 miles, it's hard to imagine it can be attributed to a type of oil.
jwalterus
Made in America
I'd try dino 15-40 and see what happens, if consumption slows down with that, I'd run an auto-RX cycle
Macrobb
Full Access Member
I run 15W40 Mobil. The stuff is pretty cheap, especially if you can get the mail-in-rebate coupons they do every few months($5 off 1 gal, $25 off 5 gallons, limit 5 1 gals and 2 5 gals - so I buy 15 gallons of oil for around $8/gal).
I figure that on a worn IDI like just about all of them are, the heavier oil(and yes, it is heavier at lower-than-212F temps) will help with the leaks.
I've tried running 5w40 on a worn IDI and it just about leaked it all out really quickly.
On the other hand, I ran 5w40 for a bit on a newly rebuilt IDI and had no oil leaks or loss... so if your seals are in good condition, it's probably OK.
If you can't find any other cause for your oil leaks, it's probably rings - I just plain removed all the valve seals from my rebuilt IDI at one point with no extra oil consumption.
Remember, the intake is not under any real suction(and if you have a turbo, it's under pressure). A gasser has a major vacuum in the intake, so you have to limit oil getting sucked down the valve stems; an IDI not so much.
I figure that on a worn IDI like just about all of them are, the heavier oil(and yes, it is heavier at lower-than-212F temps) will help with the leaks.
I've tried running 5w40 on a worn IDI and it just about leaked it all out really quickly.
On the other hand, I ran 5w40 for a bit on a newly rebuilt IDI and had no oil leaks or loss... so if your seals are in good condition, it's probably OK.
If you can't find any other cause for your oil leaks, it's probably rings - I just plain removed all the valve seals from my rebuilt IDI at one point with no extra oil consumption.
Remember, the intake is not under any real suction(and if you have a turbo, it's under pressure). A gasser has a major vacuum in the intake, so you have to limit oil getting sucked down the valve stems; an IDI not so much.
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madpogue
Full Access Member
Do they make a 15W40 Mobil 1?
Macrobb
Full Access Member
I always thought the company was mobil 1
https://shop.advanceautoparts.com/p...gclid=CJ7Tq6bo_NQCFZBcfgod4N8HkA&gclsrc=aw.ds
is the stuff I'm talking about.
jwalterus
Made in America
http://www.cenex.com/lubricants/commercial-fleet/oils/superlube-tms
that's what I run generally
sometimes I'll run the Maxtron DEO if I feel like running a syn blend
at one point I was running the Maxtron Enviro-Edge, but I didn't notice any difference, and full synthetic costs more
The nice thing about working at the Cat dealer, I can use the analysis machine and do my own oil sampling
that's what I run generally
sometimes I'll run the Maxtron DEO if I feel like running a syn blend
at one point I was running the Maxtron Enviro-Edge, but I didn't notice any difference, and full synthetic costs more
The nice thing about working at the Cat dealer, I can use the analysis machine and do my own oil sampling
Thanks for the help, I'm gonna try dyno delo and see if I have less oil loss. As said before I have no leaks of any kind and zero blow by at any rpm or temp so I don't think it is ring related.
madpogue
Full Access Member
That's dino. Mobil 1 is synthetic.
Golden Helmet
Full Access Member
I must have the only IDI engine that likes Rotella. I've got 3500 miles on my current oil (500 miles overdue for a change, I know, I'm a monster), I added one quart at about 2800 miles and that's all it wanted. 315k miles on the engine, zero blowby, and the PO had no idea what a CDR is so that hasn't been touched since the truck was built. I figure if everything's happy, don't mess with it 
@ OP : You mentioned you put a new CDR on it. Have you tried putting the old CDR back on?
@ OP : You mentioned you put a new CDR on it. Have you tried putting the old CDR back on?
@ OP : You mentioned you put a new CDR on it. Have you tried putting the old CDR back on?[/QUOTE]
I haven't but I may try that, when I replaced the CDR it took away all the blow by from the oil fill cap but maybe it was the tube that was leaking....
I haven't but I may try that, when I replaced the CDR it took away all the blow by from the oil fill cap but maybe it was the tube that was leaking....
Black dawg
Registered User
How did you check blowby? Due to HUGE ring end gaps, these always have blowby. I have had my crew cab since 170k, now 379k...blowby looks the same, but oil consumption has gone from less than half a quart in 3k to a gallon or more per 1k
Take the oil fill cap off while running, Ford says a little blow by at idle is normal as long as it goes away when you raise rpm
