how meany km do you do before an oil change ? 5000Km

the truck idels a lot of the time

 

i just changed mine at 5000 miles....i could tell a difference in the way it sounded and ran. i used rottella 15/40.

 

5000 kms is about 3100 miles, so that's pretty early. But if you have LOTS of idling, maybe it's not so bad. I run syn 5W40 and I go ~7500 miles (~13,000 kms).

 

i to use the rottella 15/40 i sell this product and use in most of the equipment i service
idling 10 to 15 hours at lest in a month

fuel filter at the same time as the oil ?

 

I do the fuel filter every 15,000 miles or 24,000 km. You'll just need to keep an eye on it to see how the filter reacts to the fuel you get. You should be able to go at least every 3rd oil change for the fuel filter I would think.

 

I change every 10,000km.

 

i know its over kill but i change my fuel filter every oil change. just piece of mind i guess, i got the truck i always wanted, now i want to take care of it. i could save some money though by doing it every oil change, i need to think on this

 

i do it every 5000km's..... i'm in the 300,000km club though

 

aaaah, I change mine every 10,000 MILES. dont knwo how many km that is, sorry.
I had schaeffer do an oil analasys and its still "good" but ill just stick with that.
I use the regular motorcraft 15/40 oil and motorcraft filter.

 

can you tell a difference in the sound/ performance with going that long? i know mine was getting pretty loud at about 4500 miles. Was starting to think i had other issues....but i remember reading that fresh oil is a good place to start when you have issues....before i changed the oil i changed the fuel fliter and air filter...had a little more pep but didnt really quiet her down. did the oil change last week and man what a difference. i couldnt imagine going 10,000 miles. the 5000 miles were a mix of highway/ intown/ and towing a 10,000lb camper.

 

Right after I typed that, I went out and changed the oil. I was at my 10k time and had been lugging the oil around for a month.
It does seem to run a little smoother, but I guess I couldnt tell a real difference.
I tow from 6k to 12k, drive 30 miles a day in the city, and drive 1000 hyway miles a month. I tow from town to town, and from central state to southern state. My truck gets used for EVERYTHING. It will even sit and idle for hours at a time.
I cant wait until I get the bumpers and lights on it, then it will do even more work.

 

I wouldn't go that long on dino. I don't care what the OA said. Just my $0.02.....

 

The "correct OCI" for "minimizing" engine wear depends "only" on how hard your engine has been run ...and on how efficiently your oil filter removes "abrasive particles" from the oil supply ...and whether you use "conventional oil" or "synthetic oil" has no bearing whatsoever on determining the correct OCI for a given engine ...and this is also the stated opinion of Blackstone!

I'm currently researching the area of "abrasive wear" ...which is somewhat like a "nuclear chain reaction" ...because if even one particle gets in between two sliding surfaces ...that particle generates several more particles ...and those particles grind off some more particles etc ...and the only way to stop this "chain reaction" is to change the oil ...and more frequent OCIs will increase the "life expectancy" of any engine ...especially a HEUI engine!

In the "old days" before UOA was readily available and affordable ...racers would check for wear by pulling the dip stick and dripping a few drops of oil onto a glass slide like is used for a microscope ...and then they'd place another slide on top to make an "oil sandwich" ...and place the sandwich on a perfectly flat surface and rub the top slide back and forth while pushing down as hard as possible with the fingers ...and then wash the slides with alcohol and inspect them with a magnifying glass for scratch marks! However I'm not suggesting this method of UOA can replace a UOA lab ...because by the time you see scratches a UOA lab will have already detected that its past time for an oil change!

Unfortunately the biggest problem with using UOA lab recommendations for determining your OCIs is that the labs compare your results to so-called "universal averages" for your type of engine ...but having your UOA ppm reading being the same as one for an "average" work truck isn't the same thing as having your UOA ppm reading being one that's indicative of "minimum wear" on your engine!

Not too many years ago blood testing labs compared my cholesterol reading with so-called "universal averages" for men in my age group ...and this approach indicated it was ok for me to have a total cholesterol reading of 250 mg/dL ...but as everyone now knows having a reading that high foretells a shortened life expectancy ...and if you want your engine to have a "maximum" versus "average" life expectancy you need to change your oil more often than is recommended by a UOA lab ...and this precaution of shortening your OCIs to reduce the concentration of abrasive particles in your oil is analogous to my taking Zorcor to lower the concentration of LDL cholesterol in my blood!

The owners of the two engines shown below have both waited far too long to change their oil ...and compared to even the "universal averages" ...the Iron ppm on the left is 24% higher ...and the Iron ppm on the right is 82% higher! Compared to a 14 ppm Iron reading ...which my analysis suggests is about what a 7.3L would see for 3K mile OCIs ...the Iron ppm on the left is 50% higher ...and the Iron ppm on the right is 121% higher!



Below is a quote from Blackstone discussing the above UOA reports...

..."These two 7.3L engines are both running about 17,000 miles on the oil. Both engines have more than 100K miles on them (in fact, the one wearing better actually as more miles on it than the other), and both are running 15W/40 oil. With everything else being roughly equal, the difference in wear is most likely due to the way they’re operated. We are not sure what kind of conditions engine #2 is running in, but chances are good it does more towing, hauling, or stop-and-go driving than engine #1. Because his engine is wearing more, owner #2 should probably be changing his oil more often. Incidentally, engine #1 is running a well-known, petroleum-based 15W/40. Engine #2 is running a high-dollar synthetic 15W/40. We don’t think oil type plays much of a part in wear, but we bring this up to illustrate the point that buying expensive oil doesn’t necessarily mean you can run your oil longer."...

 

Good info
i just wanted to see what everyone had to say abought this one

 

Bypass filters is the trick to longer oil life.