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Castrol 5w40 vs Castrol 0w40 #4655913 02/04/18 02:01 PM
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Patman Offline OP
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I see a lot of people praising Castrol's 0w40 on here but I never see anyone talking about their 5w40 at all, is it really that inferior? My local Costco carries the 5L jug of 5w40 for $32 CDN, although it's still cheaper for me to buy Castrol 0w40 across the border in a US Walmart.

So what is it about the 5w40 that rubs my fellow BITOGers the wrong way?


2018 Corvette, 17k, M1 ESP Formula 5w30 & NAPA Gold
2006 Civic EX Coupe, 152k, PUP 5w20 & Fram Ultra
2010 BMW 328i X-Drive,121k, GC 0w40 & Fram Ultra

Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4655919 02/04/18 02:05 PM
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Quattro Pete Offline
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It's nitpicking to some extent, but higher Noack of Edge 5w-40 indicates lower quality oil bases. It's one of the reasons it cannot meet MB 229.5 spec.

Since Edge 0w-40 is the same price or less and meets more stringent MFG specs, most people just don't see a reason to buy the 5w-40 stuff.



2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4655992 02/04/18 03:19 PM
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When I lived in NW Ohio, I had 2 friends with Audi vehicles that specified VW 502 oils. Several years ago I scored a bunch of loose quarts for $2 each at Autozone of Castrol 5W-40, 0W-40, & 0W-30 as well as older Pennzoil Ultra and newer Pennzoil Platinum in 5W-40. All met VW 502 specs, and the vehicle that used up the Castrol 5W-40 is still running fine today. It was a 2011 A4 4 cyl DI turbo.

Last edited by Nyogtha; 02/04/18 03:19 PM.

"No matter how paranoid you are you're not paranoid enough. Tell the truth. Reach as many people as you can with it. That's your weapon." - Susanne Modeski, aka "Holly" to The Lone Gunmen
Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656044 02/04/18 04:09 PM
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When I spoke to Castrol over the phone, they told me their two Euro oils that were PAO based were Edge 0W40 and Edge 10W60. By implication that makes the Edge 5W40 a Group III synthetic. Nothing wrong with that, but that is the difference.

I also hear it's Noack is a touch over 10%, still good, but also the reason it can't claim MB 229.5 for the 5W40. It can claim other great specs like Porsche A40.

Here the Edge 5W40 is always priced below the Edge 0W40, which I assume helps it sell. I've seen the 5W40 at a good sale price a few times, but never pulled the trigger on it. The Edge 5W30 A3/B4 with BMW LL-01 and MB 229.5 is more my style. The 5W30 A3/B4 is also Group III, but viscosity wise it's a tighter oil, so less VII and a lower Noack.


---------------------------------------------------------------------------------
Castrol Edge 10W30 A5/B5 + Wesfil-Cooper Z154
Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656072 02/04/18 04:38 PM
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Canadian Tire, Partsource, and NAPA Canada will also have it for a good price on occasion. Walmart Canada can, too, but that's a little more hit and miss.


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: Castrol 5w40 vs Castrol 0w40 [Re: Quattro Pete] #4656080 02/04/18 04:46 PM
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Originally Posted By: Quattro Pete
It's nitpicking to some extent, but higher Noack of Edge 5w-40 indicates lower quality oil bases. It's one of the reasons it cannot meet MB 229.5 spec.

Since Edge 0w-40 is the same price or less and meets more stringent MFG specs, most people just don't see a reason to buy the 5w-40 stuff.

The oil is thicker.


2015 F150 2.7
2018 F350 6.2
Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656101 02/04/18 05:00 PM
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The 0w-40 is easier to find than the 5w-40 (Amazon, Walmart) for me. Given a lower Noack and better base oil (though honestly there doesn't appear to be much difference in performance and protection between Group III and Group IV base oils) it's a pretty easy choice for me.


2015 F150 XLT SCrew 2.7 Eco-Boost
5w-30 Magnatec, FL2062

2018 Ford Edge SEL Eco-Boost 2.0
5w-30 Magnatec, FL-910S




Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656114 02/04/18 05:09 PM
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edyvw Offline
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Originally Posted By: Patman
I see a lot of people praising Castrol's 0w40 on here but I never see anyone talking about their 5w40 at all, is it really that inferior? My local Costco carries the 5L jug of 5w40 for $32 CDN, although it's still cheaper for me to buy Castrol 0w40 across the border in a US Walmart.

So what is it about the 5w40 that rubs my fellow BITOGers the wrong way?

Castrol 5W40? Total POS.
Used it in Passat 1.8T B5.5 and it took 4,000 miles for hydro lifters to start knocking.
That problems was never present with Castrol 0W30 (GC) I used later and is one of the reasons I switched to 0W30.
It is actually below average Group III oil since there are other Group III oils that meet MB229.5 or MB 229.51 like Valvoline 5W40.


15' Toyota Sienna AWD (Mobil1 5W30 EP+OEM filter).
11' VW Tiguan 2.0T (Castrol 0W40+MANN filter)
Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656117 02/04/18 05:15 PM
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Patman Offline OP
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I wish we still had GC 0w30 here (and for the $5 per liter I used to find it at back then!) as this would be my top choice for her BMW!


2018 Corvette, 17k, M1 ESP Formula 5w30 & NAPA Gold
2006 Civic EX Coupe, 152k, PUP 5w20 & Fram Ultra
2010 BMW 328i X-Drive,121k, GC 0w40 & Fram Ultra

Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656148 02/04/18 06:02 PM
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Quattro Pete Offline
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Originally Posted By: Patman
I wish we still had GC 0w30 here (and for the $5 per liter I used to find it at back then!) as this would be my top choice for her BMW!

Your local Walmarts dont carry it anymore?

https://www.walmart.ca/en/ip/castrol-syntec-0w30-1-litre/6000016937531


2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656167 02/04/18 06:35 PM
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Garak Offline
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Originally Posted By: Patman
I wish we still had GC 0w30 here (and for the $5 per liter I used to find it at back then!) as this would be my top choice for her BMW!

As much as it pains me, check CT and Partsource on that product, too. NAPA Canada is, again, another option. Of course, the 1 L pricing is always the barrier. Getting a good relationship with an independent parts store that sells Castrol is another option, particularly for products that are getting harder to find or that are less frequently on sale.

Quattro Pete: All our Walmarts used to carry the Castrol 0w-30 A3/B4. Now, it's a bit hit and miss. In fact, your link shows it's not available at any of the local Walmarts currently, but if I were needing the product, I'd verify in person, because I don't know how accurate their site is on stock. Canadian Tire's site seems to have correct inventory numbers, with online stock matching their computer, but whether someone stocked the shelves is another matter, too.


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: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656314 02/04/18 09:06 PM
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Patman Offline OP
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I haven't seen GC at my local Walmart or Canadian Tire in quite a while now, and the price would be a problem too, my wife's car takes 7 quarts at oil change time (plus one for top up) and single 1L bottles of any Castrol product are about $13, so it would be almost triple the price of buying in the bigger jugs (and GC never did come in the bigger jugs) I should have built up a bigger stash back in the day! (I think my largest supply was 80L at one point!)

Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656498 02/05/18 12:59 AM
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The local CTs here usually have it, though of course, that can change at any time. All I could recommend is watch for the one litre specials, and see what you can find. Of course, there's nothing wrong with the other options in the sensible container size. I think Bluewave Energy is your Pennzoil-Quaker State distributor, as well, so they might be able to get you a decent price on the PP Euro 5w-40 LL01, too.


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: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656563 02/05/18 06:24 AM
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Patman Offline OP
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Even if I found a steady supply, and even if it went on sale for 50% off, it would still be more costly than just buying the big jugs of 0w40 from the US. Plus I remember how pouring 7L of oil into an engine one bottle at a time is not much fun too

Re: Castrol 5w40 vs Castrol 0w40 [Re: Patman] #4656572 02/05/18 06:54 AM
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Interesting that 0w40 has a lower VI

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