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Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? #5138789 06/19/19 07:50 PM
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Newman88 Offline OP
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Or is it bad for a 7.3? Reason I ask is that my local parts store is getting rid of alot of SAE 30 SAE40 oil, and if I can use it on my truck I would buy it in a heart beat. Just FYI $2.50 a gal and ambient temps rarely dip to the low 30°.

Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5138831 06/19/19 09:05 PM
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Chris142 Offline
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I have not found any that meets cj,cj4 etc specs. I would love to run straight weight in my 6.9.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5138847 06/19/19 09:36 PM
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DoubleWasp Offline
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Most of it seems to be geared toward old 2 stroke diesels. Is it at least a CI oil?


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5138958 06/20/19 05:04 AM
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dnewton3 Offline
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Depending on your location in NM, a straight grade may or may not be a good choice.
You can buy a bottle, send it off for VOA info, and then decide if it's a good choice or not, but personally I'd stay clear and just use a decent inexpensive 15w-40 or 10w-30.

The old 6.9IDI was spec'd for 10w-30 or straight 30, but that does not apply to the PSD.


The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5139008 06/20/19 06:24 AM
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atikovi Offline
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Originally Posted by Newman88
Just FYI $2.50 a gal


At 63 cents a quart I'd buy it just to use as a flushing oil, but then, I buy 2 or 3 cars a month. For regular use, not so sure.

Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Chris142] #5139195 06/20/19 11:17 AM
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Linctex Offline
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Originally Posted by Chris142
I have not found any that meets cj,cj4 etc specs. I would love to run straight weight in my 6.9.


???????

The International 6.9 and early IDI 7.3 run just fine on "modern API rated" straight 30W !!

In the 80's & 90's if it was diesel and "living on a farm" - - - it got the same oil as everything else. Usually all fed from one drum of 30W

There's no reason to fear straight 30W in warm weather.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Linctex] #5139265 06/20/19 12:50 PM
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Chris142 Offline
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Originally Posted by Linctex


There's no reason to fear straight 30W in warm weather.

One with a diesel rating sure. I'm not putting "SN" oil in it.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Chris142] #5139424 06/20/19 04:32 PM
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addyguy Offline
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Originally Posted by Chris142
I have not found any that meets cj,cj4 etc specs. I would love to run straight weight in my 6.9.

Wal-Mart should have 'HD' SAE 30 that meets diesel specs...even older CI specs would work for yours.


2010 Kia Soul 2U - 2.0L I-4, auto; 152k miles.
Castrol Edge (black bottle) 5W-30; Fram TG 9688.

2009 Pontiac G5 - 2.2 I-4, auto, 121k miles.
Oil/filter TBD
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5142126 06/23/19 06:21 PM
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Newman88 Offline OP
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Its the STP brand. Ill post the info on the bottle tomorrow, and aee what you oil gurus think.

Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5143498 06/25/19 07:27 AM
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Newman88 Offline OP
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What you guys think?

[Linked Image]
[Linked Image]

Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5144492 06/26/19 09:16 AM
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racin4ds Offline
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Nope, thats not a HDEO, and its SN rated. No good for your diesel.


Just say NO to thin oils and M1!
05 F350 Powerstroke
05 Hyundai Tucson
08 Legacy GT
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: Newman88] #5144529 06/26/19 09:55 AM
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kschachn Online Content
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Sometimes it is just mystifying why there is the confusion over oil specifications and approvals. Granted it is exacerbated by unscrupulous companies trying to fool consumers with weasel wording, but in this case the specs are flat out missing from that oil. I guess it is easier to focus on grade rather than specs since those are sometimes not printed on the front in large letters.

The truck in question requires what, CJ-4? What does the owner's manual say? Once you know that, find an oil that has the required spec.


1994 BMW 530i, 251K
1996 Honda Accord, 280K
1999 Toyota Sienna, 430K
2000 Toyota ECHO, 284K
Re: Anybody running SAE 30/SAE 40 in a 7.3 Powerstroke? [Re: kschachn] #5144898 06/26/19 04:03 PM
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Newman88 Offline OP
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Yes CJ-4 is the spec. I'm not using it on the 7.3 I did buy 24 qts of SAE 30 for my kids go karts and my ATV. Thanks again guys.

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