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5.4 3V New motor- 5w30 or 0w40? #5185112 08/12/19 01:37 PM
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panthermike Offline OP
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My F150 is currently in the shop getting a new Ford Long block. I bought the truck with 97K and a good history but this stuff happens! Very happy I purchased a powertrain warranty on it. Based on some recommendations from both this board as well as Ford techs(one of which is Fordtechmakuloco on YT), I will not be running 5w20. Most of the recommendations seem to be for 5w30.

My question is should I stick with a Syn 5w30 or something like M1 0w40? Any benefit in these 3 valves with the 0w40? Not trying to start a viscosity war here, just curious what some of your guys thoughts are or if anyone has experience with these motors? This motor failed at 103K, so I'm hoping to at least get another 100-150K out of her before it's retired.

Thanks for the feedback

IMG_20190721_161455740.jpg

'17 Armada Platinum; RGT 0w20, 52K
'19 Ram 1500; RGT 5w20, 15K
'70 F100; Valvoline 15w40
Biotech For All
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185115 08/12/19 01:44 PM
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Miller88 Offline
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Are you doing a HV oil pump? Or is it just going to be all stock components?


18 Forester 2.5I 6M
00 Jeep XJ
01 F-350 4x4 5M
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185119 08/12/19 01:51 PM
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burla Offline
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Most 0w40's are super class oils, built right on the edge of the low limits to be a 40 weight cSt 12.5, most of them really spend most of their time as 5w30 in the sump. I wouldn't go Ford spec hunting if you are trying to gauge quality. Look at mercedes and porsche spec, those specs encourage the manu's to use higher quality base oils. Put it this way, it is easier to find a high quality 0w40 then a 5w30, because 5w30 is hamstrung with regulations thanks to CAFE and the EPA unless you move over to real boutique 5w30. IMO good move getting away from 20 weight. If you go 0w40 for higher ep/aw additives and part pao base oils, look at one with cSt less then 14 for sure, closer to 12.5 better.

Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185124 08/12/19 01:54 PM
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Silverado12 Offline
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I use 5W-30 in all my Fords (2000 4.6 2 valve Mustang GT, 2010 3 valve Mustang GT, 2018 5.0 4 valve Coyote Mustang GT). I'm definitely not with thin oil in these motors. They will last a long time with good maintenance, though. Even the 5.3L.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185130 08/12/19 02:02 PM
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Bryanccfshr Online Content
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Mobil 1 and Castrol 0w40 are both great oils run them and don’t look back,


2018 Trd Pro 4Runner
2018 Tacoma off-road

Dealer 0w20 to M1 0w40 FS -it depends
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185161 08/12/19 02:36 PM
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zorobabel Offline
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A friend of mine ran 15W-50 in one of these engines. It didn't blow up.


1997 Maxima 210k, Castrol GTX Synblend 5W-30, PL14459
2004 Corolla 211k, Valvoline SynPower 5W-30, K&N HP-1003
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185162 08/12/19 02:36 PM
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demarpaint Offline
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Mobil 1 0W40 would be a great choice. I'd say ESP 0W30 or 5W30 would be great choices too, if you're looking for a "thicker full synthetic" 30 grade oil, and don't mind paying up for it.


God Bless Our Troops

Re: 5.4 3V New motor- 5w30 or 0w40? [Re: Miller88] #5185195 08/12/19 03:21 PM
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panthermike Offline OP
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Originally Posted by Miller88
Are you doing a HV oil pump? Or is it just going to be all stock components?


It will be all stock components


'17 Armada Platinum; RGT 0w20, 52K
'19 Ram 1500; RGT 5w20, 15K
'70 F100; Valvoline 15w40
Biotech For All
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185196 08/12/19 03:22 PM
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Silverado12 Offline
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I use 5W-30 in all my Fords (2000 4.6 2 valve Mustang GT, 2010 3 valve Mustang GT, 2018 5.0 4 valve Coyote Mustang GT). I'm definitely not with thin oil in these motors. They will last a long time with good maintenance, though. Even the 5.4L.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185231 08/12/19 04:03 PM
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ka9mnx Offline
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5w-30 synthetic.


2005 Ranger 3.0 - SuperTech Syn 5w-30/Motorcraft
2000 4Runner 3.4 - SuperTech Syn 5w-30/Toyota
1997 B2500 Van 3.9 - M1 HM 10w-30/Mopar
1993 F150 4.9 - SuperTech Syn 5w-30/Motorcraft
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185268 08/12/19 04:37 PM
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Garak Offline
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An A3/B4 type synthetic would be just fine. So would an E6 like I'm running. Of course, there's nothing wrong with 5w-20 or 0w-20, but you have chosen not to run them, and that's perfectly fine and there definitely are other choices.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185279 08/12/19 04:44 PM
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Jimmy_Russells Offline
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What was used in the original engine, and what failed?

Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185313 08/12/19 05:18 PM
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caprice_2nv Offline
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If I had one of these engines I would use whatever is the best 5w30 synthetic you can find on sale, at no more than 5k miles, or 3k if it's short tripped.

These do not tolerate the extended oil changes so many on here like. Tiny oiling holes plug up and once it happens it's too late from everything I've heard.


84 Olds Cutlass - 350 Olds
83 Chevy Caprice - 305 Sbc
79 Honda CX500
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185325 08/12/19 05:37 PM
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dblshock Offline
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my 5/30 spec'd Toyotas run perfect on 0/40 cold and 15/40 warm weather...neither use oil.


05 Lexus GX470 175k
640:1 TCW-3
M1 0W40 XG-3614
Toyo Open Country H/T II

06 4Runner SR5 155k
640:1 TCW-3
M1 0W40 XG-3614
Falken Wildpeak AT3W
Re: 5.4 3V New motor- 5w30 or 0w40? [Re: panthermike] #5185332 08/12/19 05:48 PM
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FastLane Offline
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M1 5W30 is what I use in my 4.6.


2010 Silverado 4.8 4x4 Mobil 1 5W30 Fram XG10060
2002 Mustang GT 4.6 Mobil 1 5W30 Fram XG2
1966 Cessna 150 Phillips 20W50
2013 Mercury 30hp Mystic 25W40
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