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View Full Version : oil change 5W-40 or 15W-40


Honky
10-23-2008, 11:42 AM
A couple of weeks ago just before a long trip to the top of B.C. I stopped into an oil change place. They wanted $220 for an oil change. They said the only oil I can run is 5W-40 Synthetic. When I said I just wanted the standard 15W-40 oil they were like deer in the headlights. In fact the guy had to ask his supervisor where they kept that grade of oil…they actually had to go look for it. The bill was $89.00 Yes I know it’s easy to change the oil but I was out of time and just needed it done.

What do you guys run in your Dodge?

How often are you changing your oil. The book shows every 24000 KM or once a year

England
10-23-2008, 12:19 PM
water works realy well...and its cheap give it a try

Stetson
10-23-2008, 12:53 PM
Dear God! 24000km ? wow! The lubrication guide states that standard engine oil should be changed every 5000km or 3 months, this is because the additive package that is added to the oil breaks down and dissipates. Once this occurs, the oil cannot protect against carbon build up, the viscosity lessons, condensation in the motor adds to oil contamination etc. list goes on. People and manufactures prolong the service intervals due to using full synthetics, this you can do but I personally would not go even half that long. Im going to guess here and say the 5-40 instead of the 15-40 is due to the clearances in the engine, turbo etc now. Engines now like yours are now a 24 valve, tighter components, and require immediate lubrication upon start up. If its cold, and you've used a conventional oil at 15-40, upon starting its not going to hit the top end of the motor for a number of seconds which will lead to wear and damage, and the thermal heat protection that a synthetic oil offers is higher than a conventional. I presume with the higher pony they now run, and all the new emission crap added to the engine, (DPS FILTER) it restricts the aspiration causing the engine to work harder which in turn causes more heat, requiring better lubrication, as poor oil causes more friction, which in turn is converted to heat, which leads to component break down.

B
10-23-2008, 01:10 PM
holy fuck kev ... 24000 [wako] ... lol ... 15/40 royal purple syn and change between 8 and 10 000 ...

with reg oil every 5000 for sure ...

F150HULK
10-23-2008, 01:21 PM
Cause I have a Yanke truck I change it on the 5's so every 5000 miles. With religion. I use the 15-40.

I think 24000 is a bit of a strech Kev. [16]

Josh_M
10-23-2008, 02:05 PM
water works realy well...and its cheap give it a try

:happy0045::happy0045::happy0045::happy0045:

dirka dave
10-23-2008, 02:07 PM
That's all 24,000 ? could have stretched it a bit longer......:D

I change the oil in my 97 every 8000kms, in my 82 every 3000kms.

As far as synthetic, bunch of crap as far as I am concerned....I have run both types in different applications and the only thing that's different is the amount of money that is left in my pocket.

There is a difference between "wall mart" oil and say castrol, other than that oil is basically oil, synthetic is a just plain old oil with more additives in it.

There are lots of opinions on oil and their properties and it would be good to hear them.

I use 5-30 in the winter, and 10/30 in the summer.

Just my 2 cents...

[cheers]

Honky
10-23-2008, 02:10 PM
Sorry that was a typo...thanks for the info. Going to stick with the 15-40 and change every 5000km

thank guys

dirka dave
10-23-2008, 02:11 PM
Most diesels use 15/40 Kev.

Honky
10-23-2008, 02:15 PM
They do but like my first post the oil change place couldn't understand that

I also just noticed metal flakes in my trany oil....time to change that as well

dirka dave
10-23-2008, 02:27 PM
Just remember that the people at "Jiffy Lubes" are not mechanics...

How many Kms on the tranny ?

Honky
10-23-2008, 02:38 PM
I just had the tanny oil changed about 5 months ago

dirka dave
10-23-2008, 02:43 PM
Silly question,,did they change the filter ?

Sometimes they don't depending on weather its internal or spin on...

You use your truck as a truck so you might want to change the tranny oil more often....

Jeepnut
10-23-2008, 02:51 PM
buy a chevy......................

epic3
10-23-2008, 02:57 PM
They do but like my first post the oil change place couldn't understand that

I also just noticed metal flakes in my trany oil....time to change that as well


Thats not good dude is it still under warranty

barracuda
10-23-2008, 03:01 PM
buy a chevy......................

didnt the chev trans shit the bed? Perhaps i am confuseing it with a differnt chev

Jeepnut
10-23-2008, 03:12 PM
tranny's fine......but i blew the heads off with to much boost:D but i fixed that

B
10-23-2008, 03:37 PM
tranny's fine......but i blew the heads off with to much boost:D but i fixed that


didn't you do the tranny with to much boost before as well ... ? ... [36] [36] [36] [36] or waz that to much beers ;)

Stetson
10-23-2008, 04:12 PM
Kev, watch with what your doing in regards to mods to the engine. There great, and the extra power is awsome, but I see a ton of done out truck in our business, chipped, exhaust, cold air, turbos done etc. This just emphasizes the fusible link to the equation, THE TRANSMISSION. Everyone ive dealt with has upgraded it, or had to rebuild it as the additional HP killed it.

Kev what year is your truck again 07 or 08, engine 5.9L, or the 6.7L Blue tech, and do you have the auto 6 stick tranny with the "tiptronic" style shift buttons on the shifter. As these have had problems.

F150HULK
10-23-2008, 05:04 PM
Kev, watch with what your doing in regards to mods to the engine. There great, and the extra power is awsome, but I see a ton of done out truck in our business, chipped, exhaust, cold air, turbos done etc. This just emphasizes the fusible link to the equation, THE TRANSMISSION. Everyone ive dealt with has upgraded it, or had to rebuild it as the additional HP killed it.

Kev what year is your truck again 07 or 08, engine 5.9L, or the 6.7L Blue tech, and do you have the auto 6 stick tranny with the "tiptronic" style shift buttons on the shifter. As these have had problems.


[stupid]

My Buddy did exactley that and the tranny upgrade at BD was $6700 Ouch but on the good side he was dyno'd close to 400 horse.

poostang
10-23-2008, 08:04 PM
15/40 CJ4 rated or the 6.7s i do believe
you can use regular 15/40 if you have a older 1 the cj4 is just emissions shit but if you dont use it will void warrenty


imo esso xd3 isa good oil 10/30isgood winter oil or if u wannause syntecgo with the exds0/40 verygood oil andalways do it 5000kms unless urun synthethic ucan get away with 8,000 but change filter at 4500kms

if you do it every 24000 it will void warrenty

the new chevs oil life light comes onevery 14,000 seen warrentys get voided

Trooper
10-23-2008, 08:18 PM
I do mine every 5000 with 15/40. I dont think the synthetic is worth is. Diesel oil gets pretty allot of soot in it anyways. I get the buckets of the chevron oil.

Maelthra
10-23-2008, 08:21 PM
Make sure what the manufacturer specs for the engine is used. New 6.4L Powerstrokes use API CJ-5 (not 100%, been a while since I was changing oil) which is different from standard 15w-40; we were putting the new stuff for Fords into Cummins engines and someone's dealership threw a fit over it.

poostang
10-23-2008, 09:02 PM
every year they come out witha new grade cj4 is newest im pretty sure 6.4sand 6.7s recommend the cj4 gradeonly good thing bout synthetic is its a little easier onstart ups thats all

if its the 6.7 dodge stick with only cj-4 15/40

Roy
10-23-2008, 11:18 PM
I went to Cummins and got their oil change kit. Oil filter, fuell filter and 10 litres of 15-40 Valvoline Ultra Blue oil. It's the oil that Cummins recommends.

black442
10-24-2008, 01:54 AM
A couple of weeks ago just before a long trip to the top of B.C. I stopped into an oil change place. They wanted $220 for an oil change. They said the only oil I can run is 5W-40 Synthetic. When I said I just wanted the standard 15W-40 oil they were like deer in the headlights. In fact the guy had to ask his supervisor where they kept that grade of oil…they actually had to go look for it. The bill was $89.00 Yes I know it’s easy to change the oil but I was out of time and just needed it done.

What do you guys run in your Dodge?

How often are you changing your oil. The book shows every 24000 KM or once a year

every 24000km's is for the commercial engines. like the n14 or the ISX. thats the change intreval for the tractor/trailers, on hiway engines. we do all are fleet at 24000 km's or sooner depending on idle time(loading tankers with pto's and stuff). but those engines hold 38-42 litres of oil. you should be changing yours every 5000-8000 km's. 15/40 is fine, you don't need synthetic and cj4 is required if your truck has a DPF(diesel particulate filter). cj4 will cut down on carbon buildup and cause less regeneragtions in the dpf.

HEAVY METAL
10-24-2008, 09:00 AM
the only oil.. CASTROL 15 40 for diesels.its what i run in the chev.

Lynx
10-24-2008, 07:18 PM
I just bought a cummins and thinking I will go this route http://www.amsoil.com/storefront/ame.aspx

I think its around 110 bucks or so for the 12L we need. They specifically sell 2.5 gallons. Good for 25,000kms or 1 yr with their filter. I've seen a bunch tests and stuff on it, and it seems alright. After 25,000 you can send it in for testing every couple months and you might get some extra milage out if it.

What do you guys think?

lizard
10-24-2008, 08:03 PM
I run 10-30 syn in mine , It runs better/quieter , I use to use just 15-40 every 5000k

slowdodge
12-12-2008, 10:23 PM
a friend of mine runs a bypass filter on his 02 cummins and he does a oil analysis every 5k and spins on a new filter he typically drops the oil every 30k and replaces it with 5-40syn delo 400. I use the same oil and drop it every 5k no matter what he tells me about acidity levels an shit I just callem a cheap ass and I hope you scatter your two dozen valves on the side of the highway. the point of the story is that oil is cheap and rebuilds aren't.

Explorer guy418
12-12-2008, 10:58 PM
the new diesels just need the new spec of oil and it was only introduced in 5w40 then after a while it is now in the 15w40 lots of guys up here in the cold run 5w40. change it 5000km no mater wut. i know a few guys that change there oil every 5000km on duramax/powerstroke and the oil is clean as it was out of the bottle....i know a guy who changes his oil ever 5000km on a cummins and he has over 700.000km. i personally think its b/s to go over 5000 no mater what u drive. and its stupid to change the filter half way through.