Oil change interval

[neub]

This is one i ordered for our 2005 C7 https://www.amazon.com/gp/aw/d/B003V...?ie=UTF8&psc=1

[DeanM2]

I have read that it is not recommended to pre-fill your fuel and oil filters.


If you don't properly fill the fuel filter by bypassing the center hole, I can see that having unfiltered diesel going into your injectors would be bad. But I can't see how pre-filling the oil filter with oil is a bad thing.

[Bigd9]

Originally Posted by dmevis

I have read that it is not recommended to pre-fill your fuel and oil filters.


If you don't properly fill the fuel filter by bypassing the center hole, I can see that having unfiltered diesel going into your injectors would be bad. But I can't see how pre-filling the oil filter with oil is a bad thing.

I'm with you. I don't understand the negativity around prefilling the oil filter either.

I've often wondered just how spotlessly clean a new filter is to begin with. Most manufacturing processes leave behind small microscopic "stuff" and I would imagine filters are no different. I mean 2 micron filter, as in my one fuel filter, is capable of stopping bacteria! Think they are that clean at the start?

http://www.hastingsfilter.com/Litera...ips2014-03.pdf

[1ciderdog]

I changed oil in my C-7 every 5,000 miles. Changed fuel filter at the same time and lubed the chassis. Serviced the Onan once a year.

[Airstreamer6]

I have prefilled oil filters too until I asked myself:

Is it good to have a quart or two of unfilted oil go directly to my bearings?

How clean is this oil directly out of the bottle?

How many microns has it been filtered to at the refinery?

Is there any chance that the oil can have microns-size foreign matter introduced into it in the handling and bottling process and in the process of filling up the oil filter?

Of course, there are some folks who take the time to dribble the new oil through the small holes on top of the oil filter around the rim, which allows the new oil to go through the filter before it enters the engine. I've tried it a time or two with both oil and fuel filters. Unfortunately, it is a messy process that exceeds my patience after the first few seconds.

Nowadays, I just screw on a new, unfilled oil filter and, so, filter the new oil through it on its way to the engine, just like most of the world does.

Like most things in life, you pays your money and takes your choice.

[Bigd9]

Originally Posted by Airstreamer6

I have prefilled oil filters too until I asked myself:

Is it good to have a quart or two of unfilted oil go directly to my bearings?

How clean is this oil directly out of the bottle?

How many microns has it been filtered to at the refinery?

Is there any chance that the oil can have microns-size foreign matter introduced into it in the handling and bottling process and in the process of filling up the oil filter?

Of course, there are some folks who take the time to dribble the new oil through the small holes on top of the oil filter around the rim, which allows the new oil to go through the filter before it enters the engine. I've tried it a time or two with both oil and fuel filters. Unfortunately, it is a messy process that exceeds my patience after the first few seconds.

Nowadays, I just screw on a new, unfilled oil filter and, so, filter the new oil through it on its way to the engine, just like most of the world does.

Like most things in life, you pays your money and takes your choice.

Interesting Post! I always figured the oil was very clean, but now you have me wondering!

"you pays your money and takes your choice"

Mark Twain in Huckleberry Finn 1884

[deblas]

Originally Posted by neub

This is one i ordered for our 2005 C7 https://www.amazon.com/gp/aw/d/B003V...?ie=UTF8&psc=1

I concur....just installed same on my 05 C7!

[vito.a]

Take a look at the Femco Compact oil drain valve. Much better design than the Fumoto.
https://www.femco.com/compact/

[DeanM2]

Originally Posted by Airstreamer6

I have prefilled oil filters too until I asked myself:

Is it good to have a quart or two of unfilted oil go directly to my bearings?

While the quality of diesel fuel is frequently suspect, I do not believe that new oil is suspect or needs to be filtered prior to use. I asked this question, initially, because I thought there might be some issue with pressures, etc. But I have no concerns about the purity of the synthetic oil I am using.

[DeanM2]

Originally Posted by vito.a

Take a look at the Femco Compact oil drain valve. Much better design than the Fumoto.
https://www.femco.com/compact/

I do not agree that this is a better design than the Fumoto. The "ball valve" design used in the Fumoto is far superior to the design used in the Femco, as evidenced by its use in many other industries and applications. The Femco is certainly more compact, but that is of no value to me in an RV application. I just received my new Fumoto valve and gave it a good inspection. It is a beautifully machined part.

[Pigman1]

Originally Posted by vito.a

Take a look at the Femco Compact oil drain valve. Much better design than the Fumoto.
https://www.femco.com/compact/

I've been using these https://www.uniquetruck.com/section/...nger+oil+drain

since Fram was selling them years ago. Used on all sorts of farm, mobile and fixed equipment and RV's These might be a bit cheaper than the FEMCO ones, but essentially the same, and they don't have a long projection to get hit by a bouncing something on the road or off.

[Pigman1]

Originally Posted by Bigd9

Interesting Post! I always figured the oil was very clean, but now you have me wondering!

Guys, you may be overthinking this a bit. Have you ever dropped an oil pan and wiped the bottom with a finger or a rag. That's what your filter is missing and is causing NO problems. A few dust specks in new oil or at the bottom of a just unwrapped filter is NOTHING to waste time thinking about. Anybody think the Tech washes his hands or puts on a clean glove before sticking the dirty thumb over the fuel filter center hole when filling the fuel filter? Use care, don't obsess and have fun.

[DeanM2]

Originally Posted by Pigman1

Guys, you may be overthinking this a bit... Use care, don't obsess and have fun.

Yes.

[vseasport]

Was searching oil change interval for my 3126 Cat and came across this thread and want to add this thought.

When changing my fuel filter I fill it with ATF for a few reasons. One is I don't want to carry a can of diesel. Also with every diesel motor I have ever owned I have used ATF as an additive. As a diesel explained to me many years ago it is high detergent, burns clean keeping down black exhaust soot and keeping injectors clean. It also helps lubricate the injection pump.

Just my late two cents.