I never said that there is no difference in viscosity and I said the difference is negligible at most US temps. You are the one that is saying that everyone should be running 0W-30 to ease cold start engine wear. This, I don't agree with as "cold start" can mean many things such as the range of temps between ambient air temp and operating temp.

Lastly, BITOG states "It is said that 90 percent of engine wear occurs at startup" which is not backed up with any fact. It is also an opinion. Would you agree that starting wear damage is less now than it was say 10 years ago? It changes every year with tighter specs and new technologies.

You seem to want to keep arguing and all I am asking for is a little data to back your comments. My data is simply that the manufacturer states the various oils you should run in the engine. If 0W-30 is on that list and you want to run it, go for it! It is your coin after all.

You challenged my comment so why are you getting frustrated? All I asked for was proof of your comments over than telling me to read another site.

Post as you please, I am unsubscribing from this thread as I think it has gone far enough.

 

Same cold temp viscosity? Your comment is not even close.

You gave these specs wanting to get "technical":

First of all, do you know what 40 degrees celsius is??? LMGTFY... It's 104 degrees fahrenheit - this is not about extreme cold temperatures... do you understand the data you're presenting??? These oils are not even directly comparable! For better reference, see Amsoils 0w30 and 5w30..

http://www.amsoil.com/shop/by-produc...tic-motor-oil/
http://www.amsoil.com/shop/by-produc...tic-motor-oil/

Amsoil SSO 0W30 has a viscosity of 59 vs 5W30 60.3 - at 104 degrees F! The 0W30 will have better viscosity the whole way down and up* until they reach the same viscosity at operating temperature, as it was designed to do.

You said you've been on BITOG since the beginning, which I'm starting to doubt more and more - I posted their comments about 90% engine wear being on cold start up - it seems no matter where it comes from, it is a fairly tale to you without "proof" - where's your proof that it's closer to 40%?

If you agree that viscosity is lower at each point (which, you should be able to see) it is the same as agreeing the flow will be better. And if you agree the flow will be better, I don't see how you don't think the wear will be less - though, as we have both said, it will be negligible. If you agree that there is a difference, as negligible as it may be, then we are in agreement... so I'm confused as to your call for empirical evidence, except that you know I don't possess it.

What would you like? In 75 degree weather, 15 cold starts in a row with 0W30, and then 15 cold starts with 5w30, idle for five minutes, shut off - and then an oil analysis? It's obvious from the viscosity that it will flow better, so why WOULDN'T the engine wear be less?

Your data about what the manufacturer recommends was a joke right..? You can run 0w30 in any motor that calls for 30 grade oil - it's nothing to do with cold start wear, as opposed to getting the car to crank period. There is actually one reason where you wouldn't actually prefer 0w30, but it has nothing to do with cold start wear.

 

You're right and I am wrong. Feel better?

I guess having all those different ratings is pointless. Maybe you should go work for the big oil companies and let them know.

FYI, lived in Germany for 8 + years, I know exactly what 40C is.

 

lol come on.. i don't care about WHO is right or wrong, i just care about WHAT is right.

If you know what 40C is then you should know the difference in viscosity is not just at freezing temps + colder range for the 0w30. It's better viscosity throughout the entire temperature range, up until at least 40C lol. Better (lower) cold viscosity, better cold flow, better cold flow, better cold start protection due to quicker flow to the parts that need it.. i guess "cold" is a bad word since it's relative, but non operating temps. that's really all i've been saying this whole time.

i'm sorry i don't have the empirical data for you about it, really - but again, like we said, differences in wear b/w 5w30 and 0w30, pretty much negligible.

 

Ive switched to Gulf Racing Oil, better value than Castrol edge and the car runs smoother and uses less oil. 0W30 is what I am using.

http://www.opieoils.co.uk/p-60121-gu...-oil-0w30.aspx

I highly recommend this oil.

 

all this tech talk is going over my head. Am I safe to go with either 0w-30 or 5w-30 from Mini's recommended oil list? This is for my wife's 08 that's:

• automatic
• justa/base model
• daily commuting purpose (no performance driving)
• doesn't get warmed up in the morning (she just starts and goes)
• Los Angeles car that rarely endures sub-45F temps in the garage at night

 

either 0w30 or 5w30 will be more than safe. basically the 0w30 flows slightly better (less viscous) at non operating temperatures. If it were me, I'd go 0w30, especially since she just starts up and drives.

**neither will ruin, nor make or break your motor

 

Today morning about -30 C degrees and my wife`s -07 MCS starts and runs fully normally,eat`s castrol 0-30W edge.

 

i just changed my wife's 08 justa with 0w-40 Mobil 1 SAE Euro formula. i went to Walmart with the list of the 4 MINI approved oils and that's the only one they had in stock at $7 a quart. Too bad they didn't have the 5 quart jug for any of them. Today I went to recycle my oil at Autozone and saw their Mobil 1 deal (all types) for 5 quarts and a Mobil 1 filter for $34. Damn.

 

For those that are interested, RMeuropean (rmeoropean.com) carries the Purflux filter, and the crush washer (for about 9 cents) for the best price I've seen, if you have an R56.

 

We carry it also. Purflux filter and with the crush washer.

https://www.ecstuning.com/Mini-2007-Cooper-R56-S-Coupe-L4_1.6L_N14B16A/Engine/Filter/

 

Right you are, ECS. And I am a customer of yours, also. Thanks for chiming in!

 

Thanks, thats great. We appreciate it.

 

Mobil 1 0W40 Euro full synth (Walmart)
Wix (w/gasket and crush washer) - Oreilly

never had a prob

 

Purflux makes the MINI filter.

 

Isn't Amsoil just rebottled Mobil 1 ?

 

Yea, that's the Gen 2 MINI filter maker is Purflux Gen 1 it's Mahle. Gen 3 it's Mahle. I like the Mann filter for my gen 1 MINI which other people prefer. Little different design, but I had no issues.

Raven is talking about his Gen 1 MINI filter.