Ok been awhile since i've been on, just bought a house with a nice big garage yippi!!! So that's my excuse lol... Ok so i've got 3k on my fresh rebuild and i'm noticing it's going through oil like crazy.... Can't find a leak anywhere, nothing in the coolant, and it seems to right well. I'm loosing like 1 1/2 -2 qts. every 200-300 miles. I've got no idea where it's going.... There is no blue or black smoke at anytime no leak i'm stumped... Any suggestion would be great.... thanks

 

What kind of oil are you using ?.

 

5/30 gtx. till like 6k then i want to switch to synthetic. need to fix the oil issue 1st.

 

you must be burning it do a compression test

 

No i need to get a tester and do that... Been so busy moving and all the bs that comes with buying a house that is almost 100 yrs old.... Also planning my wedding in Costa Rica in 2 wks been a crazy yr... just finally got some stuff moved around in the garage i can actually pull my trucks in now..keep the suggestions coming i'll be messing with it this wk i hope.

 

I would guess that your rings havn`t seated yet, your also using a thin oil, i would try using 10w30 motor oil and see if that helps.

 

Really don't they seat fairly quickly? what do i know it's my 1st build.... Well i'll try it want to get this thing perfecto before i move on to a new project.

 

It can take anywere from 3000 to 6000 miles for the rings to completely seat, don`t be afraid to drive it a little bit hard to help the rings seat, you won`t hurt it.

 

Cool ty.. does it really burn that much in that short of time? I drove to ME about a 300 mile trip and burned 2 qt each way seems like a lot to me but dunno...

 

It can. If the oil problem doesn`t stop by 5000 miles or so, then you might have a problem that will require tearing the engine down again. But before you do you might try doing a leak down test and that should tell you wich cylinder is giving you problems.

 

I hear ppl talk about the leak down test but never get any info on how to do it.... Can you tell me how to go about doing a leak down?

 

I don`t know that much about it either, but from what i understand its a test to see how long or how well a cylinder will hold presure and with that they can tell that there is a problem in a particular cylinder, its could be bad rings bad valves or a cracked head.

 

Ok if you or anyone else knows or comes a cross a thread on leakdown testing let me know ty...

 

whatever you do stay with the 5/30, oil does not disappear because its 5W

 

Why do i need to stay with 5 30? you can run up to 15 40 in these trucks...

 

hey while you are braking it in don't Cruz at steady speed not good for brake you don't want to hold rpms and it will take sometimes up 2 8000k to brake in and keep a good eye on fluid levels

 

Well that's my problem i'm loosing oil..... Got no leaks and no smoke???...... I do run on highway a lot.. Broke it for the 1st 500 limited highway. Dunno what the deal is but it seems to go through oil like a pig...

 

15 w is to thick for start ups. I wouldn't use it. Remember a large percentage of wear is on start ups, go thin. I just changed to 5/30 syn blend, then later prob to all syn.

 

I always heard that if it doesn't burn at least a quart a week its not fast enough! Sounds like yours is super fast LOL jk. Did you check the radiator and resevoir? I can see a motor burning some but that sounds like excessive. Do you ever smell burning oil even though theres no smoke?

 

Loosing oil?...oh you mean losing oil,lol.