Diesel/used motor oil blending (non-CRDs need not apply)

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nezumi
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Diesel/used motor oil blending (non-CRDs need not apply)

Post by nezumi » Sat Nov 01, 2008 8:27 pm

So I was reading this:

http://www.bmcoi.com/CatLit/Power/TECHN ... KQ6071.PDF

And I was wondering, is this something we can look into doing on a private basis for CRDs? Is it possible (or even advisable), to pick up motor oil from other people who do oil changes, like the local jiffy lube (as long as it's diesel only)? Or is it just a really, really bad idea?
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MPETE
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Re: Diesel/used motor oil blending (non-CRDs need not apply)

Post by MPETE » Sun Nov 02, 2008 1:19 pm

• Engines equipped with an oxidation catalyst
(often referred to as a catalytic converter)
should not use oil/diesel fuel blends.

this right here would tell me NO if I was reading it.
my revolving door of vehicles contines to spin.........
now I have a 2011 F150. 5.0L

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Re: Diesel/used motor oil blending (non-CRDs need not apply)

Post by nezumi » Sun Nov 02, 2008 10:07 pm

I noticed that, although from what I understand, removing a catcon is not a difficult process. I have a friend who does racing (at a race track he rents, with friends) and he removes his catcon regularly. I will admit, there would obviously be rules on when you can run that way, since it's illegal to drive without a catcon on public roads, but beyond that, it seemed like an interesting way to save some money.
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Re: Diesel/used motor oil blending (non-CRDs need not apply)

Post by MPETE » Mon Nov 03, 2008 10:24 pm

depends on the vehicle. most people who drag race a street vehicle either remove their cat semi permanently and only reinstall it when emissions time comes around (highly illegal and I do not condone this) or they will have flanges added before and after the cat and will remove it and install a straight pipe in its place for racing or will just leave it removed until race is over then reinstall.

I have never looked at the exhaust on a crd libby but I would look at it and see if it has flanges before or after the cat. chances are it wont but I dont know.

also a little tidbit
your libby is diesel powered so in the state of MD you will not have to get it emissions tested so you could take the cat off and as long as no one questions it you wont have to put it back on.
but again highly illegal and I dont condone this.

I would seriously suggest getting on some more libby oriented sites especially those that have a larger CRD fan base. I would love to swap a 2.8 libby motor into my XJ and if I keep it long enough thi is absolutely on my to-do list. but on here you are one of if not THE ONLY active CRD owner so you probably will not get any real answers.

I do however know that the CRD came from teh factory with a 5% BIO deisel blend in the fuel tank right of the assembly line so its obvious to me that you should be able to run "some" kind of bio blend but what is ok I have no clue.
I have been reading that ALOT of 7.3 powerstroke ford guys are running used ATF in blends anywhere from 5 all the way up to 100% with no real adverse effects so depending on how finicky the fuel injection system is will determine what you can/cant run
if its under ANY kind of powertrain warranty I would say dont even think about it. diesel engine repairs are expensive and if the delaer even remotely thinks its because of an unapproved fuel its gonnabe out of your pocket
my revolving door of vehicles contines to spin.........
now I have a 2011 F150. 5.0L

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Re: Diesel/used motor oil blending (non-CRDs need not apply)

Post by Boodyrider » Tue Nov 04, 2008 10:56 pm

Buddy of mine owns an automotive shop. He gets paid about a buck a gallon for his used motor oil. Dunno if that changes the equation, but they probably won't give away notable quantities for free.
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Re: Diesel/used motor oil blending (non-CRDs need not apply)

Post by wesleypipesyo » Tue Nov 04, 2008 11:28 pm

You can get free Jet A at airfields that work on aircraft. Just need to add a marvel mystery oil or something like that.
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nezumi
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Re: Diesel/used motor oil blending (non-CRDs need not apply)

Post by nezumi » Wed Nov 05, 2008 2:47 pm

Thanks for the information. It's been a busy few months, and this site has been great for a lot of jeep info plus a lot of local info but yeah, I'm probably going to have to go digging around elsewhere to really learn everything I'm looking for. Still, once I actually start doing actual work on the jeep, people I can meet face to face will be a lot more useful than people on the interwebz, right? :)
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