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      02-08-2017, 09:48 PM   #1
LeYoshi
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Cool 5w30 vs 0w30 vs 0w40 in HOT climate

Hello friends,

I live in Dallas, Texas and majority of the year is really hot here. I was wanting to know which oil type would be the best to use in really hot climate? Winter is about 2 months out of the year and it only goes down to about 30 degrees Fahrenheit and the rest of the year is like 90 degrees+ Fahrenheit.

Also, is there any recommended oil filters or does it not make any difference?
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      02-08-2017, 09:58 PM   #2
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Oil: BMW LL-01 Approved
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      02-09-2017, 03:07 AM   #3
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Originally Posted by GATORB8 View Post
Oil: BMW LL-01 Approved
Filter: OEM BMW
Yeah they are all approved but what I'm trying to figure out is which one is best for a car that spends most of the year running in really hot weather
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      02-09-2017, 05:09 AM   #4
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In your climate opting for a 0W- viscosity would be pointless. Choose 0W- in cold climates where maintaining correct viscosity in sub-zero temperatures is important.
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      02-09-2017, 06:45 AM   #5
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Quote:
Originally Posted by LeYoshi View Post
Yeah they are all approved but what I'm trying to figure out is which one is best for a car that spends most of the year running in really hot weather
I would use the 5w 40 for your location. For myself also very hot and i use Castrol 5w-30 but if available i would go for the 5w-40
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      02-09-2017, 09:48 AM   #6
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Originally Posted by LeYoshi View Post
Yeah they are all approved but what I'm trying to figure out is which one is best for a car that spends most of the year running in really hot weather
The Bentley manual doesn't do a great job on viscosity but recommends 5W40 over 50* F.

Last edited by GATORB8; 02-09-2017 at 10:55 AM.
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      02-09-2017, 10:33 AM   #7
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Wow thank you for all the great responses! I'll go for Liqui Molly 5w40 oil then!
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      02-09-2017, 11:35 AM   #8
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What does anyone think about Castrol Edge 0W-40? I normally don't like wide vis range oils ,but, this is highly regarded. I figure you get the good start up protection and the 40 for after warm up and running.
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      02-09-2017, 12:13 PM   #9
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i run rotella t6 5w-40 and i live in southwest florida.. runs great..
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      02-09-2017, 12:24 PM   #10
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Originally Posted by BeastMode335i View Post
i run rotella t6 5w-40 and i live in southwest florida.. runs great..
Wally World has the Castrol stuff at something like $25 / 5 qts. It's apparently not available at all stores.
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      02-09-2017, 12:24 PM   #11
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Quote:
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Quote:
Originally Posted by BeastMode335i View Post
i run rotella t6 5w-40 and i live in southwest florida.. runs great..
Wally World has the Castrol stuff at something like $25 / 5 qts. It's apparently not available at all stores.
Thanks for this info, was looking for it online and was having a little trouble
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      02-09-2017, 12:59 PM   #12
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I get mine off Amazon for $21 bucks a gallon..
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      02-09-2017, 01:52 PM   #13
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What does anyone think about Castrol Edge 0W-40? I normally don't like wide vis range oils ,but, this is highly regarded. I figure you get the good start up protection and the 40 for after warm up and running.
That's what I use. Frequent Amazon Prime sales at ~$22/5Q and I can use the 0W-40 oil in both the Bimmer and our Benz.

I also use the Edge 5W-20 in my F-150.
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      02-10-2017, 02:26 AM   #14
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Quote:
Originally Posted by GATORB8 View Post
That's what I use. Frequent Amazon Prime sales at ~$22/5Q and I can use the 0W-40 oil in both the Bimmer and our Benz.

I also use the Edge 5W-20 in my F-150.
You guys have some good prices on the Castrol at my location its around $85 for 6L for the following
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      02-10-2017, 05:42 AM   #15
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The climate here in so cal gets pretty hot and I use Castrol 0w40 in both my e91 and my sisters Mk6 Jetta 2.5.
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      02-15-2017, 04:19 PM   #16
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Quote:
Originally Posted by BeastMode335i View Post
i run rotella t6 5w-40 and i live in southwest florida.. runs great..
+1 on the shell rotella stuff. i just used some recently and its very good.

for your climate, 5w40 will offer the best protection.

0w is a physically thinner oil then 5w. no magical chemistry allows for thinner oils to protect rod bearings as effectivelly as a 5w would.

you will note that your engine runs quieter and smoother with 5w40 and holds oil temperatures better.

the best are shell rotella, motul, and liqui moly. I would try to avoid mobil and castrol.
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      02-16-2017, 01:35 PM   #17
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Quote:
Originally Posted by 6IX-F10-N52 View Post
+1 on the shell rotella stuff. i just used some recently and its very good.

for your climate, 5w40 will offer the best protection.

0w is a physically thinner oil then 5w. no magical chemistry allows for thinner oils to protect rod bearings as effectivelly as a 5w would.

you will note that your engine runs quieter and smoother with 5w40 and holds oil temperatures better.

the best are shell rotella, motul, and liqui moly. I would try to avoid mobil and castrol.
I definitely noticed it running a bit better when I switched from the Mobil 1 to the Rotella T6.. I was hoping I wasn't just imagining things haha..
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      02-16-2017, 07:48 PM   #18
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Above 20F

5W-40 and Mann Filters. Not until temps drop below 20F do the numbers start to show a need for the 0W oil. The 5W-40 has less VII improves which makes it more stable. I have been using the PP EURO 5W-40 with its NOACK of 6.8% , LL-01 Approval & availability make it a good choice. The Mann filter looks and performs like OEM because it is OE.
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      02-19-2017, 01:05 PM   #19
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Quote:
Originally Posted by Monger007 View Post
You guys have some good prices on the Castrol at my location its around $85 for 6L for the following
TO POST 14 from Monger007....the picture posted.

This is not LL-01......am I right?
Castrol does not make a 5w30 or 0w30 that is LL-01 approved anymore.

But 0w40 is LL01.
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      02-20-2017, 05:47 AM   #20
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Quote:
Originally Posted by DarkNemesis View Post
TO POST 14 from Monger007....the picture posted.

This is not LL-01......am I right?
Castrol does not make a 5w30 or 0w30 that is LL-01 approved anymore.

But 0w40 is LL01.
They do, but it's hard to find. I don't think it's the same oil as what was posted above, but this one at least is LL-01 and is still available. I happen to have it here:
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      02-20-2017, 08:05 AM   #21
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Quote:
Originally Posted by DarkNemesis View Post
TO POST 14 from Monger007....the picture posted.

This is not LL-01......am I right?
Castrol does not make a 5w30 or 0w30 that is LL-01 approved anymore.

But 0w40 is LL01.
You are correct, i use the LL04 for my 320D. This is what is available

0w-40 A3/B4 LL01 Castrol Edge
5w-30 C3 LL04 Castrol Edge

I have never observed a 5w30 or 0w30 that is LL-01 approved at my location
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      02-20-2017, 03:51 PM   #22
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I don't want to start or debate a OIL better Thread.....and I never will.
But my Objective is and will be to find a LL-01 that will work in my car a 2007 335i Sedan and in the Climate I live in which is a very Mild Climate. NOT OVERLY Hot like TX, or CA.
and milder than Seattle.

So my History I have run Castrol 0W30 and Mobile 1 0W40 in the last 4 years of owning this car.
The Oil Burn or Leak is VERY Consistant. 1 Litre in approx 12-14K km. (NOT Miles)
No Rattle or VCG Leak.

But I did notice a Running Temp Difference.
with 0W30 Car Ran approx 10-15 Degrees F Lower than 0W40.
so I looked up why.

Here is a short summary:
a 0W30 will get hotter Faster and Cool Down Faster.
a 0W40 will get Hotter Slower and will Cool Down Slower - Meaning retain the heat.

My Next Oil Change will be with Castrol 0W40, which is LL-01 and I am expecting the same results as Mobile 1 0W40.

I had to change cause my Cheap source for 0W30 quit his JOB....LOL
Then I switched to Mobile 1 0W40 from Walmart in USA....22 per jug is Nice.
then both Castrol and Mobile 1 are no longer LL-01...shit...
Now it's Motul or Shell, and and a few other Brands.....BUT wow....what a cost difference......
at the prices I found, might as well have dealer do my oil changes instead of me.

so I stocked up for the next 3 oil changes.
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