Bypass filter for my DMAX

[John Deere 3520]

Well this seems to be the best place to put this, I was thinking of getting a bypass for my dmax and was just wonder with amsoil 15w-40 how long can oil intervals last??? also i was told 15W-40 is no good for diesels in the winter, but my dad has run 15w-40 in his diesel sence 2001 when he first bought a Dmax and never had a problem.. Please help.

[Rippers Customs]

Well this seems to be the best place to put this, I was thinking of getting a bypass for my dmax and was just wonder with amsoil 15w-40 how long can oil intervals last??? also i was told 15W-40 is no good for diesels in the winter, but my dad has run 15w-40 in his diesel sence 2001 when he first bought a Dmax and never had a problem.. Please help.

Well, aint too sure on the little trucks, but I am a heavy truck mechanic.
Another company I worked for used Rotella 5w40 synthetic in everything, year round. ( I even use it in my Wheel Horse ;)
So not to sure if it applies, but I knowAmsoil is a great product. I run Amsoil 20w50 syn in summer and 10w40 in winter in my Harleys. so... as far as running synthetics. You can run them longer but I would change filter in between...
We would go 20000 and change oil filters, at 40000 replace oil and filters. that was on ISX Cummins.
I don't see where the applications are different. They both call for same kinda oil. So if ya want to stretch oil services... see the dealer.
Synthetics are the way to go. Even if ya keep oil service the same. 5000 i think is what yours is...or is it 7500...?
any way :Welcome1:

[John Deere 3520]

Im running 15w-40 now and almost have 5,000miles on my dmax sence i got it and if i can switch it to synthetic then that would be great Im think 20,000miles in between oil changes or so.

[Rippers Customs]

Im running 15w-40 now and almost have 5,000miles on my dmax sence i got it and if i can switch it to synthetic then that would be great I'm think 20,000miles in between oil changes or so.

Just remember dirty oil is not our friend...
replaced filter in between some where.maybe at 10000.
I am sure some one out here does this can show us the way...lol.
What is the current mileage on this unit?
Just gotta watch if ya got a boat load of miles on it , syn. will wash out motor and clean and then leak...OIL :Stop:
it is a nasty thought but syn oil cleans as it goes...
go to http://www.donsoil.com/ he is a sponsor of this site MTF.
Shoot him your thoughts and see if he has any good ideas to soot back on your situation.

[John Deere 3520]

The truck has almost 80,000miles is that to much to switch over??

[Rippers Customs]

The truck has almost 80,000miles is that to much to switch over??

Not too sure , but i am a gambler so I would.
here is a specific page to read about what you are looking at doing
http://www.donsoil.com/15w40_diesel.htm

[John Deere 3520]

whats the difference in the 15w40 conventional oil to the 15w40 amsoil synthetic??

[John Deere 3520]

The 15w-40 synthetic seems to be a cross bread oil that will work for my truck.

[donsoil]

Well this seems to be the best place to put this, I was thinking of getting a bypass for my dmax and was just wonder with amsoil 15w-40 how long can oil intervals last??? also i was told 15W-40 is no good for diesels in the winter, but my dad has run 15w-40 in his diesel sence 2001 when he first bought a Dmax and never had a problem.. Please help.

Greetings Brandon !
You have the choice of 5W30 or 15W40, most of the diesel customers that I have with pre new emmission diesel engines are using Amsoil HDD 5W30 diesel oil. There are several reasons for choosing the 5W30 over the 15W40, the first is improved fuel economy, this is achieved through reduced friction, when you use a lighter weight oil you have less drag in the film of oil that lubricates, this gains around 3% to 5% better fuel economy versus a 40 weight, and with Amsoil 5W30 you compromise nothing in wear, and in most cases will significantly reduce wear versus 40 wt. dino oils.
Another huge plus is that it flows to -60 deg. F. On a morning like we had in Northeast Iowa today it was -30 deg. F. if your diesel has dino oil in it and you are able to get it started after sitting in those cold temps your ears are in for about 5 minutes of rattling and hammering until the oil gets warm enough to flow, in the meantime engine wear is going through the roof.
The same conditions with Amsoil 5W30 diesel oil gives your ears a break from the no oil to the upper end rattle in about 5 seconds, greatly reducing wear and extending engine life.
You chose which weight works best for you, the 15W40 Amsoil will flow to about -49 deg. F. , so either one will do a super job of protecting your engine investment.
Drain intervals boil down to what you are comfortable with.
Amsoil recommends normal duty drain intervals of 25,000 or 1 year in diesel pickups when used in conjunction with Amsoil's Synthetic Media full flow filter.
Amsoil recommends severe duty drain intervals of 15,000 miles or 1 year in diesel pickups when used in conjunction with Amsoils Synthetic media full flow oil filter.
If you add Bypass filtration and utilize, understand ,and trust in oil analysis, drain intervals may be greatly extended depending on operating conditions.
I have installed many bypass filtration systems on G.M. Ford and Dodge-cummins diesels with the 5W30 diesel oil, one of the 7.3 powerstrokes had 130,000 miles on it when I converted it to Amsoil 5W30 with bypass system,
that was 3 years ago, It now has over 200,000 miles on and the only thing we do is sample the oil every 25,000 miles then change filters and top off the oil, the oil samples are coming back suitable for continued use, and the wear is minimal. This truck is owned by a construction company, it is a dually 4x4 that pulls large trailers regularly.
I can't tell you how long you may safely run Amsoil with bypass filtration, however used oil analysis will help you determine what is right for your operating conditions.
If you are interested in giving Amsoil a try you may purchase through my website, or contact me for wholesale pricing.
Please let me know if this is helpful.
Thank you !
Have a great day!
Don:thThumbsU

[John Deere 3520]

Well sence the 5w-30 seems to flow better i think i will use that, so your saying I can switch the oil and oil fiter and stretch out my oil life alot or i can get the bypass and extend it even more, but im thinking about getting ams 5w-30 with ams oil filter instead of getting a bypass. What do you think? Then i should be good for 15,000-25,000miles


Also my grandpa is thinking of switching to ams aswell I told him to get 10w-30 and the ams oil filter will that last 20,000 as well?

[donsoil]

Well sence the 5w-30 seems to flow better i think i will use that, so your saying I can switch the oil and oil fiter and stretch out my oil life alot or i can get the bypass and extend it even more, but im thinking about getting ams 5w-30 with ams oil filter instead of getting a bypass. What do you think? Then i should be good for 15,000-25,000miles


Also my grandpa is thinking of switching to ams aswell I told him to get 10w-30 and the ams oil filter will that last 20,000 as well?

Your duramax calls for a EaO 52 Amsoil synthetic media full flow oil filter, if you use HDD 5W30 with it 15,000 to 25,000 mile or once a year drains are guarateed by Amsoil.
Is your grandpa's truck new emissions or old ? Pre 2007 may use the 5W30 or the 15W40, if it is new emissions he must stay with CJ-4 oil which Amsoil has in a 5W40.
If you would like to print out a complete list of filters, lubricants, and fluid capacities for your vehicles go to www.fluidcapacity.com , it is a website I set up to take you directly to Amsoil's online application guide. Check it out, it's a super tool and a great time saver.
Please let me know how I may be of further assistance.
Have a great day.
Don

[John Deere 3520]

ok thats what i think im going to do with my truck cant beat it saves money in the long run..

Grandpas truck is a 2001 chevy S10

[glenn27]

I believe you willl be plesantly surprised in the results after a little time.
I use Amsoil in two of my gas-powered vehicles and several small GT's...
To me, I still change the filter at manufacturers recommendations, and add the qt. lost---and it saves me a lot of time/money in the long run.

Cranked my "Yota pickup up an hour ago--been sitting for a couple days, and it's about 3 outside, and drove it 25 miles--it heated right up, cranked quicker (in my opinion), and no valve rattle/ticking.....:thThumbsU

[John Deere 3520]

Nice I think when its time to change im going to seems to be worth it.

[John Deere 3520]

Nice I think when its time to change im going to seems to be worth it.

If I use 15w-40 is it the same filter??

[glenn27]

Yes--a filter is just a filter--it will segregat whatever liquid you run thru it....

[John Deere 3520]

I thought so I cant wait to switch over..

[donsoil]

Brandon:
The Amsoil EaO 52 full flow oil filter is a direct replacement for the original G.M. full flow filter on your duramax. This new filtration technology was developed for the military for the M1 Abrams tank, this filter media is the most efficient and technologically advanced filter media on the market today.
Synthetic oil filter media outperforms traditional cellulose by a wide margin in
3 key area's.

#1 less flow restriction:
on cold startup if your filter has a high restriction to flow or the oil is to thick to flow through the filter the filter bypass opens and lets the oil bypass your filter to feed the bearings, the longer the bypass remains open the more dirty oil reaches the engine bearings resulting in much higher wear rates.

#2 dirt stopping ability:
Traditional cellulose oil filters average around 40 % efficient at 15 micron dirt particles on a single pass, Amsoil synthetic oil filters are 98% efficient at 15 microns on a single pass, and 50% efficient at 7 microns on a single pass.

#3 filter capacity :
Amsoil EaO oil filters have a much higher capacity for holding dirt than traditional cellulose, this allows for much longer run time when used with Amsoil synthetic motor oil.
Another reason Amsoil filters last longer is the fact that Synthetic media oil filters do not break down or degrade from the hot oil. Traditional cellulose filter media is bonded together with resins, these resins break down and degrade from the hot oil, a top quality automotive cellulose filter media will become brittle and begin to split or even crumble if run to long.
I have a filter cutter and have cut apart dozens of Amsoil filters from my customers vehicles with anywhere from 15,000 to nearly 30,000 miles on them and have yet to find any sign that the filter media is breaking down in any way.
I also cut out a section of the filter media and squeeze out the oil in the bench vise, then unfold it to see how much capacity is left, even with 25,000 to 30,000 miles these filters are nowhere near plugged.

Any way you cut it oil filtration is the single largest key factor in extending engine life, you can have the best oil in the world but without filtration you really haven't gained much.
Superior lubrication and filtration costs money, unfortunately many people have a little bird on their shoulder singing " Cheap Cheap " in their ear, at the expense of equipment life.
Amsoil has put together superior lubrication and filtration technology that safely extends oil drain intervals, and greatly extends equipment life, and have done so for over 35 years.
I invite anyone reading this to do the research, no one beats the cost efficiency of Amsoil.
Have a great day !
Don:thThumbsU

[John Deere 3520]

Thanks don.. another few hundred miles and im going to switch.

[glenn27]

do some pic's as you do the transformation--then keep some mileage records--I think you will be surprised..

[Doubleh]

I just follow the owner's manual on my D-Max. 15-40 dino oil at the recommended change interval. Had a '95 6.5 Chevy diesel that is still in the family and driven every day and both have spent a lot of time pulling fifth wheel campers and assortrd other trailers. No engine problems with either.

I'm not a chemist or engineer but the people who designed these things are. I'll use their recommendations.

[John Deere 3520]

Thanks guys