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What weight of oil 20 or 30? Rrrrrrr #5142395
06/24/19 01:06 AM
06/24/19 01:06 AM
Joined: Jun 2011
Posts: 40
az tucson
chubbie Offline OP
chubbie  Offline OP

Joined: Jun 2011
Posts: 40
az tucson
Hi everyone a few weeks ago I bought a new to me 2007 dodge ram 1500 with the 3.7L v6. I changed the oil i used qsad 5w-30. However on the oil cap it showed 5w-20. In my owners manual yes says 5w-20.But some of the auto part stores say I should use the 5w-30 Which was recommended by Oreilly auto. checked at pennzoil .com and valvoline.com they say 5w-30. I googled this found an old thread on here years ago molar was wrong misprint in the owners manual 30 weight should be used.I'm confused.So what weight am I supposed to use? Yes here in the desert it's 100 so I'm not sure but 30 weight could be ok for the summer? I hope someone has some info on this and set me straight.


07 Dodge Ram 148K QSAD 5w-30
18 Mazda cx5 49K pennz syn 5w-20
Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142428
06/24/19 03:28 AM
06/24/19 03:28 AM
Joined: Aug 2009
Posts: 2,421
PA
Gasbuggy Offline
Gasbuggy  Offline

Joined: Aug 2009
Posts: 2,421
PA
I drove one of these trucks for a week. Please use the 5w30. That engine works hard to move the truck around and it has no moving parts that must have 20wt (like the MDS equipped hemis).


Cadillac CTS-V 6.2L 10w30PP
Volvo P1800 Euro L
76 Mercedes 300D Rotella T4
Series III Land Rover VWB
02 Yukon 10w30 PP
01 P71 M1 EP-HM 0W20
95 Accord - 386k. Mobil 2 RIP
Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142431
06/24/19 03:44 AM
06/24/19 03:44 AM
Joined: Jul 2005
Posts: 32,506
NY
demarpaint Offline
demarpaint  Offline

Joined: Jul 2005
Posts: 32,506
NY
I run 5W30 in my 08 3.7L Liberty, that's what I'd use in your Ram.


God Bless Our Troops

Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142443
06/24/19 04:14 AM
06/24/19 04:14 AM
Joined: Feb 2015
Posts: 2,859
Slovenia EU
Kamele0N Offline
Kamele0N  Offline

Joined: Feb 2015
Posts: 2,859
Slovenia EU
10w-15w.....40....HDEO... that is what I would use in a desert....


2008 Toyota Yaris 1ND-TV 1.4 D4-D Tech9 5W30 C3 VW 504/507
1997 Toyota Landcruiser KZJ95 3.0 TD Elf Evolution NF900 5W40
Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142446
06/24/19 04:36 AM
06/24/19 04:36 AM
Joined: May 2019
Posts: 776
WA
Mad_Hatter Offline
Mad_Hatter  Offline

Joined: May 2019
Posts: 776
WA
This 👇 [Linked Image]

Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142449
06/24/19 04:42 AM
06/24/19 04:42 AM
Joined: Nov 2004
Posts: 1,980
SD
zrxkawboy Offline
zrxkawboy  Offline

Joined: Nov 2004
Posts: 1,980
SD
I’d definitely use xW30.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: What weight of oil 20 or 30? Rrrrrrr [Re: Mad_Hatter] #5142468
06/24/19 05:43 AM
06/24/19 05:43 AM
Joined: Jan 2011
Posts: 3,918
PV Az @ 5000'
AZjeff Offline
AZjeff  Offline

Joined: Jan 2011
Posts: 3,918
PV Az @ 5000'
Originally Posted by Mad_Hatter
[Linked Image]



Nice chart but it's in C. shrug


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
18 Nissan Titan 5.6 DI, QSUD

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: What weight of oil 20 or 30? Rrrrrrr [Re: AZjeff] #5142479
06/24/19 06:23 AM
06/24/19 06:23 AM
Joined: Mar 2013
Posts: 5,695
The Midwest
skyactiv Offline
skyactiv  Offline

Joined: Mar 2013
Posts: 5,695
The Midwest
Originally Posted by AZjeff
Originally Posted by Mad_Hatter
[Linked Image]



Nice chart but it's in C. shrug


95% of the world population uses Celsius.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual

Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142485
06/24/19 06:52 AM
06/24/19 06:52 AM
Joined: Jan 2011
Posts: 3,918
PV Az @ 5000'
AZjeff Offline
AZjeff  Offline

Joined: Jan 2011
Posts: 3,918
PV Az @ 5000'
And? The OP is in Tucson which is still in the USA. 99.9% of American citizens don't get Celsius. 0 = 32, 100 = 212, who knows what 35 is? When the US officially goes to C then we learn it, otherwise we do F.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
18 Nissan Titan 5.6 DI, QSUD

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142487
06/24/19 07:10 AM
06/24/19 07:10 AM
Joined: Jun 2003
Posts: 19,208
Apple Valley, California
Chris142 Offline
Chris142  Offline

Joined: Jun 2003
Posts: 19,208
Apple Valley, California
Shows that a multi VI's 10/15w40 is good to 104F.


02 Wrangler traveler sae30
87 F250 Valvoline 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor Chevron sae30
Re: What weight of oil 20 or 30? Rrrrrrr [Re: AZjeff] #5142494
06/24/19 07:34 AM
06/24/19 07:34 AM
Joined: May 2019
Posts: 776
WA
Mad_Hatter Offline
Mad_Hatter  Offline

Joined: May 2019
Posts: 776
WA
Originally Posted by AZjeff
Originally Posted by Mad_Hatter
[Linked Image]



Nice chart but it's in C. shrug


And that's a problem how exactly? Never a shortage of critics on this board!😂

Re: What weight of oil 20 or 30? Rrrrrrr [Re: AZjeff] #5142500
06/24/19 07:37 AM
06/24/19 07:37 AM
Joined: Nov 2008
Posts: 13,996
NH
supton Offline
supton  Offline

Joined: Nov 2008
Posts: 13,996
NH
Originally Posted by AZjeff
And? The OP is in Tucson which is still in the USA. 99.9% of American citizens don't get Celsius. 0 = 32, 100 = 212, who knows what 35 is? When the US officially goes to C then we learn it, otherwise we do F.

If you're online you can easily convert the units using google.

Otherwise just remember the formula on how to convert. If you can remember that you have to either add or subtract 32, and that's multiplying by either 5/9's or 9/5's, you can easily work it out. Since we're Fahrenheit people, start in the F domain. To make 32 into 0, you'd have to subtract 32. And to make 212 into 100, you'd subtract that 32, then since 180 is still much larger than 100, it has to be multiplying by 5/9's. Reverse the order to go from C to F: multiple by 9/5's and then add 32. Done. Simple math.

Would be nice if we had kept to the plan and changed in 1975, suffered through the pain in the 80's, and had been done with it, but oh well.


2011 Toyota Camry, base, 2.5L/6MT, 187k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 152k, ours
1999 Toyota Camry LE, 2.2L/4AT, 208k, his
Re: What weight of oil 20 or 30? Rrrrrrr [Re: AZjeff] #5142501
06/24/19 07:38 AM
06/24/19 07:38 AM
Joined: May 2019
Posts: 776
WA
Mad_Hatter Offline
Mad_Hatter  Offline

Joined: May 2019
Posts: 776
WA
Originally Posted by AZjeff
And? The OP is in Tucson which is still in the USA. 99.9% of American citizens don't get Celsius. 0 = 32, 100 = 212, who knows what 35 is? When the US officially goes to C then we learn it, otherwise we do F.


No, YOU do F ..I have no problem going between Fahrenheit and Centigrade🌡️😉

Try this one...0 is freezing ❄️, 40 is freaking hot🔥. Now you can do my chart...😉

Last edited by Mad_Hatter; 06/24/19 07:38 AM.
Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142504
06/24/19 07:40 AM
06/24/19 07:40 AM
Joined: Jul 2018
Posts: 72
MO
dippschtick Offline
dippschtick  Offline

Joined: Jul 2018
Posts: 72
MO


2018 Toyota 4Runner SR5 Premium
Mobil 1 EP 0W-20
Toyota 04152-YZZA5 Filter
Ravenol MTF-1 75w-85 (Differentials)
Ravenol MTF-3 75w (Transfer Case)
Amsoil ATL Transmission Fluid
Re: What weight of oil 20 or 30? Rrrrrrr [Re: chubbie] #5142518
06/24/19 07:54 AM
06/24/19 07:54 AM
Joined: Feb 2014
Posts: 174
ga
faltic Offline
faltic  Offline

Joined: Feb 2014
Posts: 174
ga
So where would 0W20 place on this chart?


--------------------------------
19 Tacoma 3.5 2wd AT. Under 1K
17 Highlander 3.5 2wd AT 20k+
07 EX250 21k+
09 EN500 11k+
11 PCX 125 5K+
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