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#4679014 - 02/26/18 06:09 PM 10W40 HM oil in a Chevrolet 4.2L inline 6?
mrdctaylor Offline


Registered: 06/05/03
Posts: 590
Loc: McGregor TX
Guys,

I picked up a bunch of 10W40 HM full synthetic oil (both M1 and Castrol) at the AZ clearance a few months ago. My plan was to use it on my son's 2003 Hyundai Santa Fe which specs all KINDS of weights in the owner's manual. I still plan to do that, but I got so much I was thinking about using it on my daughter's 2002 Chevrolet Trailblazer with the 4.2L too (even though it specs 5W30). Thoughts? Has anyone had issues running a 40 weight in this engine? Should I be OK? I live in Texas so it never gets too cold.

Thanks in advance...


Edited by mrdctaylor (02/26/18 06:10 PM)
_________________________
02 Tacoma 3.4L, 215K, Magnatec 10W30
02 Trailblazer 4.2L, 174K, Magnatec 5W30
12 Highlander 3.5L, 88K, M1 EP 0W20
17 Escape 2.0L, 31K, Hav ProDS 5W30

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#4679027 - 02/26/18 06:24 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6175
Loc: USA
It should be fine smile

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#4679030 - 02/26/18 06:28 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: slacktide_bitog]
Nick1994 Offline


Registered: 02/19/13
Posts: 10118
Loc: Phoenix, AZ
Originally Posted By: slacktide_bitog
It should be fine smile
+1

Iím running that clearance oil in my Jeep now.
_________________________
2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

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#4679031 - 02/26/18 06:29 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
LotI Offline


Registered: 01/01/13
Posts: 1267
Loc: America's Dairyland
Run it, I ran 0w-20 in that motor for 10k miles. It doesnít care.

Plus, the FE is so bad in a Trailblazer that you canít see the difference.
_________________________
03 Honda Interceptor
11 Kawasaki KLR 650
12 Ford E450
17 VW GTI
[IMG]http://badges.fuelly.com/images/sig-us/803455.png[/IMG]

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#4679046 - 02/26/18 06:40 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
Alex_V Offline


Registered: 04/10/16
Posts: 1155
Loc: Campbellsville, KY
I put 10w30 in any Atlas engines that come through my shop with any mentionable mileage, anyway. Shouldn't hurt a thing, especially being synthetic.
_________________________
I like Chevy and Valvoline.

'13 Cruze, 1.4T, 112K
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#4679067 - 02/26/18 06:52 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5236
Loc: Fort Lauderdale, FL
Syn 10/40? No problem on any day outside of Fargo.
_________________________
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

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#4679121 - 02/26/18 07:43 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
BrocLuno Offline


Registered: 09/06/15
Posts: 5519
Loc: Kalifornia Kollective
I'd do it and not even be asking ... laugh
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4679129 - 02/26/18 07:48 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
2strokeNorthstar Offline


Registered: 07/19/17
Posts: 274
Loc: PR CA, USA
It's a straight 6 and a Chevy. It is not a highly advanced motor. It will run on most anything.

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#4679138 - 02/26/18 07:56 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
dave1251 Offline


Registered: 07/15/05
Posts: 8675
Loc: Maricopa, AZ
I would use it with no worries.
_________________________
make the inside of your engine oil cap white.
don't use.

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#4679146 - 02/26/18 08:01 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
mrdctaylor Offline


Registered: 06/05/03
Posts: 590
Loc: McGregor TX
Cool--thanks, guys. Yeah, I'd never even seen 10W40 in a full synthetic but it was such a good price I had to pick it up. I got 10 quarts of the M1 and 14 quarts of the Castrol back in December/January. :-)
_________________________
02 Tacoma 3.4L, 215K, Magnatec 10W30
02 Trailblazer 4.2L, 174K, Magnatec 5W30
12 Highlander 3.5L, 88K, M1 EP 0W20
17 Escape 2.0L, 31K, Hav ProDS 5W30

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#4679167 - 02/26/18 08:19 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18173
Loc: Dallas,Tx USA
RP used to make a 10W40 synthetic too (I'm guessing they still do?). Yep,it's a rare beast!
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4679188 - 02/26/18 08:37 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
Marco620 Offline


Registered: 02/25/14
Posts: 2186
Loc: Deplorable Kansan,HK fan!
In Texas...Run it.
_________________________
2015 Civic 162k mi.0w20 Redline/Archoil,HPS SRI,Yokohama/Moog links Borla Exhaust/Vibrant Resonator/Tein Suspension
Go Nashville Predators!

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#4679195 - 02/26/18 08:42 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
Kamele0N Online   sick


Registered: 02/09/15
Posts: 2042
Loc: Slovenia
Ehhh...why not? shrug
_________________________
2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD various 10w40

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#4679196 - 02/26/18 08:42 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: mrdctaylor
I was thinking about using it on my daughter's 2002 Chevrolet Trailblazer with the 4.2L too (even though it specs 5W30). Thoughts?


Run up to Atwood's in Lacy Lakeview
and get 5qts of full synthetic Harvest King 0W-20 for $11....

then mix it 50/50
(that's my plan)
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4679296 - 02/26/18 10:23 PM Re: 10W40 HM oil in a Chevrolet 4.2L inline 6? [Re: mrdctaylor]
SR5 Offline


Registered: 07/07/15
Posts: 4468
Loc: Down Under
I'm running 10W40 right now, no problems in my GM Ecotec.
_________________________
Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154

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