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Dan M
Dodge Dakota
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1/07/2005
12:52:48

Subject: 5w30 vs 10w 30
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I know about the difference in temperature ratings.

I have a '95 CC 4x4 3.9 and my wife is a '01 grand am (still under warranty). Her GA currently has 5w30 and my dak has 10w30. I'm going to switch both to synthetic and was wondering why not just convert one of the vehicles so that i can just be lazy and buy 1 case of oil instead of 2. Which should i switch and which oil should I switch to. We live in atlanta georgia area. I have family in Indiana and she has family in North Carolina. We do make frequent trips to mountains - love the fishing, camping ,etc.

- Dan M



NEW_SOL
Dodge Dakota
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1/07/2005
15:22:15

RE: 5w30 vs 10w 30
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hey there dan, I do the same thing , I have an 03
grand am and use 5/30 in my '00 4.7l and grandam
not much difference other than 5/30 has a larger temperature span. other than that oil is oil, though the synthetic would protect better!
hope this helps.




NEW_SOL
Dodge Dakota
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1/07/2005
15:25:30

RE: 5w30 vs 10w 30
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sorry, dan almost forgot to tell you the 5/30 is thinner than 10/30 so it would work better in colder climates and being synthetic would compensate if used in hotter climates so it like two animals in one!




kj
Dodge Dakota
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1/07/2005
16:57:31

RE: 5w30 vs 10w 30
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Either would work but I'd run synthetic 10w-30 in both of them.



Kowalski
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1/07/2005
18:06:11

RE: 5w30 vs 10w 30
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Motors engineered for 5w30 typically have tighter tolerances and should have slightly better performance with the right oil. Why not just buy a case of each, and you'll already have the oil for the next oil change ? I wouldn't run heavier than recomended unless it was an older engine with some wear.

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Mark B
Dodge Dakota
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1/07/2005
19:59:48

RE: 5w30 vs 10w 30
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Dan M, The main difference is the type of weather conditions you live in. Where you are the 10W 30 is better because you have more hot weather than cold. 5W 30 is great for mid west. I once lived in the land of Cheese Heads and there you want an oil as thin as possible for starting in those -10 to -30 degree temps. My recommendation is that if you do go up to the MTs or to ID you may be best off to use the 5W30.



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1/09/2005
10:36:21

5w-30 vs 10w-30 Amsoil Amzoil Ams Oil Amsoil
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Dan,

Since you live in Atlanta you can use either.

If I were you I would choose the "5w-30" just in case you had one of those freak winter blasts. I know about them because I was born and raised in Georgia.

The first number, preceding the "w-" as in "5w-" ("w" is for Winter), is an oil’s viscosity grade, is an indication of low-temperature performance -- the lower the better.

The lower winter viscosity grades will be more valuable in colder climates. 10w- generally flows and pumps fine at four degrees below zero on the Fahrenheit scale, and each grade below that buys you another nine degrees. Therefore 10w- pumps fine at four degrees below zero and 5w- would pump fine at 13 degrees below zero.

The winters are usually not so cold in Alanta that it would matter which winter viscosity # you choose for the first number when deciding between a 5w- or a 10w-.

__________________________________________________


The second number represents the oil’s high-temperature viscosity, but higher is NOT always better! One wants to choose the minimum viscosity that results in an oil film thick enough to prevent wear at the temperatures one expects to encounter. Only the engineers that designed the engine know what viscosity is required to provide adequate film thickness without unnecessary friction, so you should certainly try to remain within manufacturers guidelines. For what it’s worth, I trust the engineers.

**** CONCLUSION: I would recommend the 5w-30, but you can use either 5w-30 or 10w-30. ****

For everyone trying to decide which viscosity ...

It is almost certain that higher viscosity oils, such as Xw-40 and Xw-50, are complete wastes of energy, placing undue strain on your engine, and raising operating temperatures for no real benefit. Use the lower viscosities unless your owners manual calls for a higher viscosity.

__________________________________________________

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Wolfman
Dodge Dakota
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1/09/2005
11:26:30

RE: 5w30 vs 10w 30
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Hey AMSOIL guy.

I need oil and filters, 5w30 (12qts) and 2 filters for 04 dakota. How Much?$?$?

email = nvswolf at yahoo dot com



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1/10/2005
19:14:48

Amsoil Dealer #1061837 Steven Roark Amzoil Ams Oil
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Wolfman, I sent you an Email.
__________________________________________________


Further clarification regarding which oil: 5w-30 or 10w-30?

0w-30, 5w-30 and 10w-30 synthetic motor oils are ALL 30 weight oils. ANY one of these can be used regardless if your vehicle owners manual says to use, for example, a 5W-30. The "w" means winter. In winter weather: the 0w will flow like a 0w, the 5W will flow like a 5w, and a 10w will flow like a 10W - only until the engine warms up (choose what's best for you depending upon your winter climate).
__________________________________________________

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Joe.C
Dodge Dakota
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1/12/2005
15:44:37

RE: 5w30 vs 10w 30
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Could using 5W30 lower the oil pressure? Mine is running medium high. more than half way over the mark.



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1/12/2005
20:49:31

Amsoil Dealer #1061837 Steven Roark Amzoil Ams Oil
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Joe.C,

To be better able to answer your question:

1) Tell me more about your vehicle (make,model engine,etc.)
2) What motor oil and viscosity are you currently using
3) What oil filter are you using (probably the culprit)
__________________________________________________




Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com

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1/16/2005
09:11:21

5w-30 vs 10w-30 Amsoil Dealer Steven Roark 1061837
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Joe C.,

Every engine prefers a different amount of oil pressure. Too high and too low are both bad. Most engines like something in the neighborhood of 10 PSI per 1000 RPM but that is not always the case.

A heavier weight oil gives you more pressure at the cost of lower flow volume. Plus, a heavier weight oil may increase wear on cold starts, and it is Winter. Either of these can damage your engine.

I recommend that you use an oil in the recommended weight range per your Owners Manual and see what the oil pressure reading is then.
__________________________________________________

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Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com

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Orange8
Dodge Dakota
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1/16/2005
12:29:33

RE: 5w30 vs 10w 30
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I have always used 15w-40 in my 99, I have not had any probs yet. How would I benefit from switching to 10w-40, 10w-30, etc... I have 90,000 on the truck, and have always used 15w4-0. would it hurt to switch to something else??? I live in southwest VA. 99, 318, heavy duty service group, 5-speed, 4wd.



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1/16/2005
18:33:39

5w-30 vs 10w-30 Amsoil Dealer Steven Roark 1061837
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Orange8,

It is almost certain that higher viscosity oils, such as Xw-40 and Xw-50, are complete wastes of energy, ... placing undue strain on your engine, ... and raising operating temperatures for no real benefit ... which also costs you in lower MPG.

Winter Weight Oil ... and Cold Crank Protection

I will repeat the following which I have posted before ... the first number, preceding the "w-" as in "5w-" ("w" is for Winter), is an oil’s viscosity grade, is an indication of low-temperature performance -- the lower the better.

THE LOWER (SMALLER or FIRST #, as in "10w-_) NUMBER ... is the Cold Cranking Measurement, which predicts the oils cranking resistance in an engine during cold starting.

The lower winter viscosity grades will be more valuable in colder climates.

A 15w-40 will only flow fine and proctect your engine down to 5 degrees Fahrenheit.

"10w-__" generally flows and pumps at -4 degrees Fahrenheit,

"5w-__" generally flows and pumps fine at -13 degrees Fahrenheit,

... and each grade below that buys you another nine degrees.

__________________________________________________

Repeat: It is almost certain that higher viscosity oils, such as Xw-40 and Xw-50, are complete wastes of energy, ... placing undue strain on your engine, ... and raising operating temperatures for no real benefit ... which also costs you in lower MPG.
__________________________________________________


You can Request a FREE Amsoil Catalog by clicking below.



Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com

AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products



karl
Dodge Dakota
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1/17/2005
06:38:01

RE: 5w30 vs 10w 30
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thick is bad
thin is good



Orange8
Dodge Dakota
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1/17/2005
07:21:24

RE: 5w30 vs 10w 30
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thanks, will it hurt anything to switch to 10w-30 now after running 15w-40 since I have had the truck?



Orange8
Dodge Dakota
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1/17/2005
07:26:40

RE: 5w30 vs 10w 30
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also, thinking of switching to a synthetic....is this OK?



Orange8
Dodge Dakota
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1/19/2005
17:18:36

RE: 5w30 vs 10w 30
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hello????



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1/19/2005
18:56:55

5w-30 vs 10w-30 Amsoil Dealer Steven Roark 1061837
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Orange8,

Is is perfectly alright to switch to the 10w-30.

Switch to synthetic motor oil?

There are no special requirements for switching from conventional petroleum to synthetic oil.

__________________________________________________

Switching to Synthetic Motor Oil

I sometimes hear: "Synthetic oils contain detergents that can make the oil seals leak in older vehicles."

Is this really an issue?

Synthetic lubricants do have an inherent detergency that cleans and removes conventional motor oil deposits (crud) left over in an engine that has not been well maintained.

If an engine has not been maintained properly and there are damaged seals and the crud has created a "fake seal" then you could have minor leakage.

However, ALL motor oils are designed (with additives) to help swell seals slightly to prevent leakage.

The ONLY time you would observe seal leakage when switching to a synthetic oil is if the seals are already damaged or showing signs of leakage around them.

As long as the vehicle has been well maintained, and in good mechanical condition, it can be switched to a synthetic lubricant at any mileage.

Has your Dakota been well maintained, and is it in good mechanical condition?

If so ... you can switch to synthetic motor oil.

__________________________________________________
You can Request a FREE Amsoil Catalog by clicking below.



Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com

AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products



Orange8
Dodge Dakota
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1/20/2005
23:49:59

RE: 5w30 vs 10w 30
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thanks!



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