Shop By Car
 800-946-2642
Customer Reviews
Shop By Car
   Forum Width:     Forum Type: 

 Posted: May 17, 2018 10:50AM
Total posts: 1056
Last post: Jul 31, 2018
Member since:Jul 15, 2008
Cars in Garage: 0
Photos: 117
WorkBench Posts: 1
US
Quote:
Originally Posted by Richard1
...so it could be too slippery for synchronizers
This is an issue that isn't given the attention it deserves. I've switched oil brands a couple of times, but generally I ran the slippery-ist oil I could find (synthetic w/ ZDDP) and I was always aware that my synchros were struggling to keep up. When I wasn't on the track, I always rev-matched to give the synchros a break.

Jeff at Jet Motors mentioned in a video a while back that he found Amsoil Z-Max 20/50 seems to help with the synchro issue. I've been using it and the synchros do seem to do better, but not great—I still rev-match. I suppose I could use a less slippery non-synthetic oil for the sake of the synchros, but engines cost more to rebuild than the price of a few balk rings. 

Richard: Thanks again for your thoughtful advice.

 

Michael, Santa Barbara, CA

. . . the sled, not the flower

      Poser MotorSports

 Posted: May 17, 2018 10:33AM
Total posts: 580
Last post: Jul 13, 2018
Member since:Mar 11, 2010
Cars in Garage: 0
Photos: 6
WorkBench Posts: 1
BO
I would stay away from that, as it does not comply with SAE norms. A 10W-40 must have at least a 3.5 HTHS, and according to that table, their 10W-40 is only 2.9, so it is labeled wrong. That could make it a 10W-30.

And the 20W-50 is 4.0 HTHS, which does pass the 3.7 minimum, but I've seen lots of xW-40 oils with 4.2. So it is more sluggish in flow, yet weaker in shear strength than many xW-40 oils. I'm not advertising Amsoil, but their z-rod 20W-50, for example has an HTHS of 5.2. And they even have 3.6 on their 10W-30.

 Posted: May 17, 2018 10:20AM
Total posts: 1146
Last post: Aug 13, 2018
Member since:Jul 31, 2008
Cars in Garage: 5
Photos: 107
WorkBench Posts: 3
CA

Let's try this:

Castrol 4 Stroke 20w50

 Posted: May 17, 2018 09:59AM
Total posts: 580
Last post: Jul 13, 2018
Member since:Mar 11, 2010
Cars in Garage: 0
Photos: 6
WorkBench Posts: 1
BO
Quote:
Originally Posted by Richard1
Quote:
Originally Posted by Spitz
There is a highly advertised specialty 20W-50 oil for classic cars that is made from a group I base oil. That is the bottom of the pile in base oils.


Can you name that one....is it VR1?

Also....what's your take on Rotella 15/40 for a classic MINI (manual)
That page does not open for me. Maybe for registered users? how about a direct link?
No, not VR1. I deleted my snapshot of the page, so will look later for it, although I avoid publishing names, for legal reasons.
Rotella 15W-40 is good, although a 10W-40 will flow better on startup. Much better than any 20W-50 for the majority of Minis.

 Posted: May 17, 2018 09:47AM
Total posts: 580
Last post: Jul 13, 2018
Member since:Mar 11, 2010
Cars in Garage: 0
Photos: 6
WorkBench Posts: 1
BO
Quote:
Originally Posted by Spitz
There is a highly advertised specialty 20W-50 oil for classic cars that is made from a group I base oil. That is the bottom of the pile in base oils.


Can you name that one....is it VR1?

Also....what's your take on Rotella 15/40 for a classic MINI (manual)
That page does not open for me. Maybe for registered users? how about a direct link?

 Posted: May 17, 2018 07:53AM
Total posts: 13550
Last post: Aug 16, 2018
Member since:Jan 22, 2003
Cars in Garage: 4
Photos: 381
WorkBench Posts: 1
CA
There is a highly advertised specialty 20W-50 oil for classic cars that is made from a group I base oil. That is the bottom of the pile in base oils.


Can you name that one....is it VR1?

Also....what's your take on Rotella 15/40 for a classic MINI (manual)

 

"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May

"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge

 

 

 

 Posted: May 17, 2018 07:32AM
 Edited:  May 17, 2018 07:35AM
Total posts: 1146
Last post: Aug 13, 2018
Member since:Jul 31, 2008
Cars in Garage: 5
Photos: 107
WorkBench Posts: 3
CA

Richard,

Thank you for this article. Interesting read!

This is what I been using on my Minis, in 20w50. Currently being used on a 850 1965 Moke with unknown mileage original engine.


Castrol Grand Prix Motorcycle 4-Stroke.

www.arcticchat.com/forum/attachments/utility-performance-technical-info/104369d1123175230-oil-castrolgp.pdf

being driven only in good weather in Canada, so anything above 0C.

 

What's your take on it?

Regards,

Miguel

 Posted: May 17, 2018 05:51AM
Total posts: 580
Last post: Jul 13, 2018
Member since:Mar 11, 2010
Cars in Garage: 0
Photos: 6
WorkBench Posts: 1
BO
Yes, in a nutshell, stay away from anything with a SN in the label, especially with it on the left side of the "/", as that means it passes the slippery fuel conserving tests. This year, there are certain restraints as to when you can and can't put it to the right of the "/"after a diesel CK-4 classification, so in that case it is ok, as it meets CK-4, but wouldn't be my favorite.

Racing oils that "meet" SN, are tricky to categorize, as there are no concrete definitions as to what tests and limits they use. In general, it will be a SN with added ZDDP, but there is no rule, so it could be too slippery for synchronizers, or it might not be.

Base oil determination requires interpretation of the Safety sheets, and even then are not conclusive, as some brands do not say anything other than something generic. In general, if it says "Solvent refined", or "Distilled", it is group I. If it says "Severely hydrocracked", or Severely hydroprocesed", it is group II. But there is one brand that actually says Group I on their web page. I don't know why. For those that know, it is sort of like wearing the scarlet letter. Of course it would be nice if they just put the HTHS value on the spec sheet and we wouldn't care how they got there.

 Posted: May 16, 2018 11:31AM
Total posts: 34
Last post: Aug 9, 2018
Member since:Jul 28, 2016
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
First of all, thank you for the detailed analysis and writeup. It was definitely educational and I appreciate the background and bit of data to support your recommendations. I have a few questions after reading the paper to help me put it into action in picking an oil.

> Never use an API SN rated oil.
> You do not want a common gasoline formula oil, such as SN.
You mention this a couple times, but I want to be clear on your takeaway. You said that the analysis takes you down the path of selecting a diesel formulation or a "specialty oil". Is a high-zinc, racing oil that "meets and exceeds API SN" a "specialty oil" in your mind or are you suggesting that we do not use an SN oil of any kind?

> There is a highly advertised specialty 20W-50 oil for classic cars that is made from a group I base oil. That is the bottom of the pile in base oils.
How would I find out what base oil is used for a particular product? I have looked at various product spec sheets as well as the MSDS for a few oils and don't see any reference to source or base for the products.

Thanks!
Scott

-------------------------------------------------------------
Scott | 1963 Austin Cooper | 2003 MINI Cooper S
 Posted: May 9, 2018 04:48PM
Total posts: 1056
Last post: Jul 31, 2018
Member since:Jul 15, 2008
Cars in Garage: 0
Photos: 117
WorkBench Posts: 1
US
Quote:
Originally Posted by Richard1

I hope there is some information in there to help you when you hit the shelves for oil, or when someone asks you for a recommendation.

Thank you for your exhaustive thesis on Mini-specific motor oil—perhaps the most detailed I have seen! Of course I, and suspect many others were expecting you to make a recommendation for a particular oil. It was wise of you to avoid doing that.

 

Michael, Santa Barbara, CA

. . . the sled, not the flower

      Poser MotorSports

 Posted: May 9, 2018 04:21AM
Total posts: 580
Last post: Jul 13, 2018
Member since:Mar 11, 2010
Cars in Garage: 0
Photos: 6
WorkBench Posts: 1
BO
Thanks
Looks like part of the link got cut off, here it is complete.
//www.widman.biz/mini_pics/classic-mini-oil.pdf

Not sure which other forum you mention. I posted it on Facebook and the Automini forum.

 Posted: May 8, 2018 04:33PM
 Edited:  May 8, 2018 04:38PM
jeg
Total posts: 7070
Last post: Jul 19, 2018
Member since:Apr 25, 2000
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
Great job - you mentioned a previous article on tappet protection - is there any chance for a direct link and are you going to post both links on the other forum also?

The peasants are revolting...          

"Gone with the Wind" - a brief yet moving vignette concerning lactose intolerance

 Posted: May 7, 2018 03:56PM
Total posts: 580
Last post: Jul 13, 2018
Member since:Mar 11, 2010
Cars in Garage: 0
Photos: 6
WorkBench Posts: 1
BO
Considering the all the comments on oils for Classic Minis. I have put together a paper on the lubrication needs of our cars and the differences in different oil qualities and viscosities that you will find in different countries and stores.

I hope there is some information in there to help you when you hit the shelves for oil, or when someone asks you for a recommendation.

I've included an email for those who have more questions or doubts.

You can download it here: //www.widman.biz/mini_pics/classic-mini-oil.pdf