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#4503668 - 08/31/17 06:19 PM M1 5w30 HM or 0w40 European
Timmer Offline


Registered: 01/15/16
Posts: 10
Loc: Ga
Hello all, I have a 2002 Chevy Silverado 1500 5.3 with 196,000 miles....No engine problems or leaks other than piston slap when cold....My question is M1 0w40 European a good choice for this high mileage truck or should I go with M1 5w30 HM...I live in Georgia so the summers get pretty hot but winters are mild with a few nights of freezing temps....I used to use German Castrol 0w30 but it's no longer available....I plan on driving this truck until the wheels fall off so I want to use the best oil to keep her going for as long as possible....I would appreciate you folks advice...As always thank you.....

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#4503682 - 08/31/17 06:31 PM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
Eddie Offline


Registered: 12/07/03
Posts: 9575
Loc: Florida, Cape Coral
Since the engine has no leaks, I would be inclined to use the M1 0w40. Why do you want to change what is working now? Ed
_________________________
CX5 Touring 2.5L :-)

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#4503693 - 08/31/17 06:41 PM Re: M1 5w30 HM or 0w40 European [Re: Eddie]
Timmer Offline


Registered: 01/15/16
Posts: 10
Loc: Ga
I just wondered if the 0w40 European would be too thick and does it have a better add pack than 5w30 HM....I don't drive the truck hard and normally change oil and Wix Filters every 4500 to 5000 miles....I have read that the 0w40 is more like a thick 30w and since the truck doesn't have any leaks would the 0w40 European be a good choice for this high mileage motor....

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#4503699 - 08/31/17 06:43 PM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1663
Loc: Crawfordville FL
The 0w40 is going to be about the same thickness at temp as the euro 0w-30.

The M1 5w30 is HTHS 3.1 as it is an ILSAC lube. The 0W40 is HTHS 3.6

Another good option is M1 HM 10W30 HTHS 3.5

Anyway, the 5W30 might gain you some MPG. The 0W40 shears to a 30 quickly, which puts you back at 0w-30.

Either is fine for GA winter
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4503701 - 08/31/17 06:45 PM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
BobsArmory Offline


Registered: 03/28/10
Posts: 1320
Loc: Michigan
Castrol 0w-30 is available right now on Amazon
_________________________
Keeping the forces of evil at bay
2016 Chevy Malibu LT 1.5 Liter Turbo
2017 Chevy Equinox LT 2.4 Liter

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#4503709 - 08/31/17 06:56 PM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
Oro_O Offline


Registered: 09/20/14
Posts: 1352
Loc: Seattle-ish, WA
Higher miles, warm climate (GA), a vehicle that calls for a 30 weight - I'd use the 10w-30 HM. Roughly the same HTHS as the 0w-40, but more "oil" and less VII's. You don't need to make the compromise for low temperatures inherent in running a 0w-XX oil. I used this oil in my dad's Express van with the same 5.3 LM7 with typically excellent results (for the oil; I use it in a number of vehicles).

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#4503778 - 08/31/17 07:45 PM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
Astro_Guy Offline


Registered: 07/30/15
Posts: 444
Loc: Pennsylvania
Mobil 1 5w30 is at the high end of the viscosity range for SAE 30, and Mobil 1 0w40 is at the low end of the viscosity range for SAE 40. The viscosity at 100C are 12.1 vs. 12.9 cSt. This is hardly worth worrying about.

From a more practical perspective, I switched the Volvo in my signature from the 5w30 HM to 0w40 more than two years ago. Not only is it still running at 215 K, but the fuel economy has actually improved. Go figure...
_________________________
'01 Volvo V70XC, 225k, 0w40 M1
'16 Accord, 11k, soon to be 0w20 M1 EP

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#4503785 - 08/31/17 07:49 PM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
CT8 Offline


Registered: 10/09/14
Posts: 11012
Loc: Idaho
Originally Posted By: Timmer
I just wondered if the 0w40 European would be too thick and does it have a better add pack than 5w30 HM....I don't drive the truck hard and normally change oil and Wix Filters every 4500 to 5000 miles....I have read that the 0w40 is more like a thick 30w and since the truck doesn't have any leaks would the 0w40 European be a good choice for this high mileage motor....

why would the 0w-40 be too thick? As a matter of conversation what makes you wonder?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4503989 - 09/01/17 02:35 AM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
Garak Offline


Registered: 12/05/09
Posts: 24620
Loc: Regina, Saskatchewan, Canada
If you like GC 0w-30, why not the Castrol 0w-40 A3/B4?
_________________________
Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515

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#4504053 - 09/01/17 06:20 AM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
4WD Offline


Registered: 09/21/10
Posts: 6423
Loc: Texas
I'm a long time user of Mobil 1 and others GIII/IV oils - but the 5.3L is the most durable and oil tolerant engine I have. If 40's don't bother you - I'm running Delvac Super at only 70k - it's 4.1 HTHS ...

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#4504099 - 09/01/17 07:33 AM Re: M1 5w30 HM or 0w40 European [Re: Timmer]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
A friend had a 99 Silverado with 350K when sold. He used M1 5-30 at 15-18K OCIs. He only sold it because of the third trans that failed. The engine still ran very well.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4504387 - 09/01/17 12:26 PM Re: M1 5w30 HM or 0w40 European [Re: tig1]
Timmer Offline


Registered: 01/15/16
Posts: 10
Loc: Ga
Thanks everyone, I think I'll stick with what has been working and stay with M1 5w30 HM since that's what the manual calls for and I'm sure the GM engineers are a lot smarter than I am.....thanks again guys......

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