Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 09-22-2019, 06:15 PM   #1
dbtenner
Member
 
dbtenner's Avatar
 
Join Date: Jun 2013
Location: Texas
Posts: 59
Default Oil Detergent - Rislone ZDDP

Oil being used in my 1934 is SAE 40 straight weight from Shell Rotella. Iíve heard this detergent, Risolne (picture below) is a great zinc supplement detergent to add to the oil.

Any thoughts or review of this product?



Sent from my iPhone using Tapatalk
dbtenner is offline   Reply With Quote
Old 09-22-2019, 06:55 PM   #2
51 MERC-CT
Senior Member
 
51 MERC-CT's Avatar
 
Join Date: May 2010
Location: Hartford, Ct
Posts: 4,491
Default Re: Oil Detergent - Rislone ZDDP

The Shell Rotella appears to already have ZDDP in it.
The ZDDP is not a detergent but enhances lubrication.
If you do some research on line there are reports that say too much ZDDP can be detrimental to an engine.
__________________
DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES
51 MERC-CT is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-22-2019, 07:12 PM   #3
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 4,944
Default Re: Oil Detergent - Rislone ZDDP

You don't need it on a stock (or close to it) flathead.
tubman is offline   Reply With Quote
Old 09-22-2019, 07:16 PM   #4
dbtenner
Member
 
dbtenner's Avatar
 
Join Date: Jun 2013
Location: Texas
Posts: 59
Default Re: Oil Detergent - Rislone ZDDP

Ok thanks! I didnít realize Shell Rotella has ZDDP included.


Sent from my iPhone using Tapatalk
dbtenner is offline   Reply With Quote
Old 09-22-2019, 10:42 PM   #5
A bones
Senior Member
 
A bones's Avatar
 
Join Date: May 2010
Location: CLAYTON DE
Posts: 869
Default Re: Oil Detergent - Rislone ZDDP

The need for zinc grew out of factory heavy valve spring, high lift, high performance camshafts. These street applications from early '60s thru the early '70s demanded higher zinc levels to insure valve train longevity.

While research shows some zinc is good, it also tells us that too much zinc can cause excess wear.

One of our senior gurus ( Ol' Ron ) speaks of spring pressure of about 45 or 50 lbs. ( I can't recall which ) as all that is needed.
__________________
Enjoy yer day. Tom
Hate can't fix what it started.
A bones is offline   Reply With Quote
Old 09-22-2019, 11:10 PM   #6
petehoovie
Senior Member
 
petehoovie's Avatar
 
Join Date: May 2015
Posts: 2,097
Default Re: Oil Detergent - Rislone ZDDP

Wondering if ZDDP is beneficial to Babbitt bearings......Hmmmm
__________________
The only thing nice about being imperfect is the joy it brings to others....

"Silver rings, your butt! Them's washers! Damn!"
"We shot our way out of that town for a dollar's worth of steel holes." - from 'The Wild Bunch' - 1969
https://www.youtube.com/watch?v=7NReUd2_0u0

petehoovie is offline   Reply With Quote
Old 09-23-2019, 12:05 AM   #7
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 2,444
Default Re: Oil Detergent - Rislone ZDDP

Quote:
Originally Posted by petehoovie View Post
Wondering if ZDDP is beneficial to Babbitt bearings......Hmmmm
ZDDP kinda needs to be activated by heat and pressure from 2 metalsurfaces to stick to them...so not harming bearing material...
flatheadmurre is offline   Reply With Quote
Old 09-23-2019, 07:10 AM   #8
Gene1949
Member
 
Gene1949's Avatar
 
Join Date: Jun 2016
Location: Pahrump, NV
Posts: 95
Default Re: Oil Detergent - Rislone ZDDP

Snake oil my friend. Oil companies spend billions of dollars formulating oil additives engineered by chemists. By using additives your are basically trying to outthink engineers who have spent their entire lives formulating additives. I know I'm not smart enough to do that.

Our engines were built and ran during a time when lube oils were very simple in design. About 2 and a half years ago went on the internet and looked for oils with the highest ZDDP package.
AT THAT TIME Castrol GTX 20-50 was rated in the top 5 unless you went to the designer "racing" oils. Having said that I'm sure that has changed by now. Anyway, all oils in the top 5 exceeded the ZDDP minimums necessary to protect old engines
Gene1949 is offline   Reply With Quote
Old 09-23-2019, 08:50 AM   #9
uncle buck
Senior Member
 
uncle buck's Avatar
 
Join Date: May 2010
Location: Snohomish,WA
Posts: 697
Default Re: Oil Detergent - Rislone ZDDP

Quote:
Originally Posted by Gene1949 View Post
Snake oil my friend. Oil companies spend billions of dollars formulating oil additives engineered by chemists. By using additives your are basically trying to outthink engineers who have spent their entire lives formulating additives. I know I'm not smart enough to do that.

Our engines were built and ran during a time when lube oils were very simple in design. About 2 and a half years ago went on the internet and looked for oils with the highest ZDDP package.
AT THAT TIME Castrol GTX 20-50 was rated in the top 5 unless you went to the designer "racing" oils. Having said that I'm sure that has changed by now. Anyway, all oils in the top 5 exceeded the ZDDP minimums necessary to protect old engines


The problem today is the engineers and chemists are more focused on federal emission regulations than preventing wear on our old engines.
uncle buck is offline   Reply With Quote
Old 09-23-2019, 09:18 AM   #10
40 Deluxe
Senior Member
 
Join Date: May 2010
Location: now Kuna, Idaho
Posts: 2,997
Default Re: Oil Detergent - Rislone ZDDP

Quote:
Originally Posted by uncle buck View Post
The problem today is the engineers and chemists are more focused on federal emission regulations than preventing wear on our old engines.
Looking at the longevity of engines from the last 15 or 20 years(often 300-400,000 miles) I'd say what the petroleum engineers have done is to the benefit of our old engines! The only time extra zinc is needed is if we're running high RPM high pressure valve springs. Remember, there was no zinc in oil in the flathead's day!
40 Deluxe is offline   Reply With Quote
Old 09-23-2019, 10:55 AM   #11
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 4,792
Default Re: Oil Detergent - Rislone ZDDP

When you add additional additives to oil with additives you can end up with something worse if the additives clash with each other
Kurt in NJ is offline   Reply With Quote
Old 09-23-2019, 01:34 PM   #12
V8 Bob
Senior Member
 
V8 Bob's Avatar
 
Join Date: May 2010
Location: Granger (Northern) Indiana
Posts: 1,224
Default Re: Oil Detergent - Rislone ZDDP

The best advice I've learned about engine oil is if you think you need an additive, you're using the wrong oil!
V8 Bob is offline   Reply With Quote
Old 09-23-2019, 07:15 PM   #13
uncle buck
Senior Member
 
uncle buck's Avatar
 
Join Date: May 2010
Location: Snohomish,WA
Posts: 697
Default Re: Oil Detergent - Rislone ZDDP

Quote:
Originally Posted by 40 Deluxe View Post
Looking at the longevity of engines from the last 15 or 20 years(often 300-400,000 miles) I'd say what the petroleum engineers have done is to the benefit of our old engines! The only time extra zinc is needed is if we're running high RPM high pressure valve springs. Remember, there was no zinc in oil in the flathead's day!

We have also changed metals , gone to roller valve train ,variable valve timing, timing belts etc. The engines built today are every bit as different as the oils
uncle buck is offline   Reply With Quote
Old 09-24-2019, 02:27 AM   #14
Karl
Senior Member
 
Karl's Avatar
 
Join Date: May 2010
Location: Manawatu, New Zealand
Posts: 1,036
Default Re: Oil Detergent - Rislone ZDDP

Quote:
Originally Posted by uncle buck View Post
We have also changed metals , gone to roller valve train ,variable valve timing, timing belts etc. The engines built today are every bit as different as the oils
Agreed but there is no doubt the quality and functionality of todays lubricants is light years ahead of that used in the day. I have run restored BMC engines in cars for 50000 miles with no engine work . My mechanic grandfather spoke of the same engine in the day regularly needing a valve job at 10000 miles and the bottom end at 30000 miles Something has changed and in this case it isn't the engine -Karl
__________________
Such a fine sight to see-Its a Girl, My Lord, in a Flatbed Ford slowin' down to take a look at me.
Karl is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 11:13 PM.