Rear-end/Tranny Oil
|
Posts: 1,330
Threads: 34
Joined: Feb 2015
(08-01-2015, 02:59 AM)gxr02190 Wrote: The Detroit Locker really doesn't need any additive because it's not a "cone" or "clutch" driven unit.
That's what I thought. But I never personally owned one so wasn't 100% certain they don't use a specific oil.
Regards,
Mike
Posts: 446
Threads: 14
Joined: Jan 2012
Mike,
If you are looking for plain old 80w90 go to your Ford Dealer. I stock it and sell it for $5.99 a quart. Part number XY80W90QL.
Posts: 2,305
Threads: 44
Joined: May 2012
(08-01-2015, 04:06 AM)BLACK JADE 69 Wrote: Mike,
If you are looking for plain old 80w90 go to your Ford Dealer. I stock it and sell it for $5.99 a quart. Part number XY80W90QL.
Thanks Black Jade...the obvious did not even cross my mind. After a little more research I am going to gamble on the High Performance Valvoline 80w-90 without adding any additional additive.
I drained the oil today and filled it up using the High Performance Valvoline 80w-90. I took the car for a ride and did not hear an funny noises (knock on wood) and was able to launch with both tires spinning. I will still give it some more time to let the oil work itself in before I conclude.
Posts: 831
Threads: 49
Joined: Sep 2014
No rear axle or transmission manufacturer recommend anything other than a good quality oil of the grade in the handbook.
Good, clean, fresh oil YES. Additives ??
Posts: 1,330
Threads: 34
Joined: Feb 2015
Most of the time you will get clutch chatter when cornering without a friction modifier on clutch type limited slip differentials. As far back as the mid 1980's, maybe farther back, Ford and GM have sold a friction modifier additive to prevent clutch chatter. It looks like now some gear oils include the additive. I vaguely recall on the older gear oils without an additive or adding a separate additive, the gear oil had to be changed much more frequently because of clutch chatter.
Regards,
Mike
Posts: 2,305
Threads: 44
Joined: May 2012
(08-01-2015, 07:53 AM)Mach1FatherFigure Wrote: No rear axle or transmission manufacturer recommend anything other than a good quality oil of the grade in the handbook.
Good, clean, fresh oil YES. Additives ??
Very fair statement M1FF...agree 150%
Posts: 2,305
Threads: 44
Joined: May 2012
(08-01-2015, 08:25 AM)1969_Mach1 Wrote: Most of the time you will get clutch chatter when cornering without a friction modifier on clutch type limited slip differentials. As far back as the mid 1980's, maybe farther back, Ford and GM have sold a friction modifier additive to prevent clutch chatter. It looks like now some gear oils include the additive. I vaguely recall on the older gear oils without an additive or adding a separate additive, the gear oil had to be changed much more frequently because of clutch chatter.
Regards,
Mike
When I took the car out I did some light cornering and turned around in a parking lot and did not hear any chattering. Maybe not hard enough to stimulate any clutch chatter. Anyway, I am keeping my fingers crossed that the Valvoline High Performance oil does the job. After all, it ends up being about $10 cheaper if I don't have to buy the additive.
Posts: 1,330
Threads: 34
Joined: Feb 2015
Actually it will probably be fine with the type of gear oil you filled it with. Back when gear oils did not specify for suitable for limited slip differentials is when I know there were chattering issues. When I worked at a GM dealership I must have changed gear oil and added friction modifier to limited slip rear axles on at least 500 newer cars and trucks. During manufacturing GM did not add an additive and after a few thousand miles the clutches would chatter. Changing gear oil and adding the friction modifier was the fix. I knew the service manager at the local Ford dealer during that time and I guess Ford had the same issues.
Regards,
Mike
Posts: 2,305
Threads: 44
Joined: May 2012
(08-01-2015, 10:39 AM)1969_Mach1 Wrote: During manufacturing GM did not add an additive and after a few thousand miles the clutches would chatter. Changing gear oil and adding the friction modifier was the fix. I knew the service manager at the local Ford dealer during that time and I guess Ford had the same issues.
Regards,
Mike
It is interesting to know that the manufacturer did not add the additive. Did they forget or was it not known yet that the limited slips rear ends would require the friction modifier?
Mike
Posts: 1,330
Threads: 34
Joined: Feb 2015
(08-01-2015, 08:09 PM)Mustangmike Wrote: (08-01-2015, 10:39 AM)1969_Mach1 Wrote: During manufacturing GM did not add an additive and after a few thousand miles the clutches would chatter. Changing gear oil and adding the friction modifier was the fix. I knew the service manager at the local Ford dealer during that time and I guess Ford had the same issues.
Regards,
Mike
It is interesting to know that the manufacturer did not add the additive. Did they forget or was it not known yet that the limited slips rear ends would require the friction modifier?
Mike
I understood they did not know there would be an issue. There was a TSB, technical service bulletin, for the issue. Like I mentioned, it took a few thousand miles before it would start. For a while it seemed there were two or three cars or trucks in the shop each day because of clutch chatter. I don't know if clutch chatter was an issue on late 60's early 70's cars and trucks. I'm not quite old enough to have been working on them back then.
Believe me, there were a lot of issues that popped up after the cars were on the road for a while. There were many binders filled with TSB's. The general public only gets notified of safety related issues.
Regards,
Mike
|
Possibly Related Threads… |
Thread |
Author |
Replies |
Views |
Last Post |
|
Rear axle identification |
tanataur |
2 |
10,721 |
11-07-2016, 10:33 PM
Last Post: tanataur
|
|
9 Inch Ford Rear End |
Mach 1 Club |
6 |
21,621 |
12-08-2013, 08:37 AM
Last Post: Mustangmike
|
|
Servicing the Ford C4 Tranny |
Mach 1 Club |
1 |
8,890 |
02-09-2012, 11:46 AM
Last Post: Rare Pony
|
|
TECH - How to set up the Ford 9 inch rear end |
Mach 1 Club |
4 |
19,417 |
09-23-2011, 03:02 AM
Last Post: Mach 1 Club
|
|
Installing an Eaton Positraction unit in a Ford 8.8 rear end |
Mach 1 Club |
0 |
12,124 |
07-15-2010, 06:03 AM
Last Post: Mach 1 Club
|
Users browsing this thread: 1 Guest(s)
|
Latest Threads
|
What's One More Iron In The Fire!
Last Post: fram lee666
03-18-2024 06:21 PM
» Replies: 125
» Views: 238145
|
"Jacobra"
Last Post: JTS71 Mach1
06-30-2023 11:13 PM
» Replies: 86
» Views: 150926
|
My old Queensland Ambulance
Last Post: JTS71 Mach1
06-30-2023 11:08 PM
» Replies: 5
» Views: 1706
|
New member from San Jose, CA
Last Post: JTS71 Mach1
05-09-2023 08:39 AM
» Replies: 12
» Views: 3965
|
Saving Seatbelts
Last Post: Jim
02-19-2023 10:23 PM
» Replies: 2
» Views: 9114
|
Sourcing new wheels
Last Post: JTS71 Mach1
01-25-2023 02:34 PM
» Replies: 1
» Views: 2003
|
Shaker Air Filter
Last Post: JTS71 Mach1
01-08-2023 02:24 AM
» Replies: 3
» Views: 1467
|
1971 Mach 1 parting out interior parts -...
Last Post: ylwhrse
12-22-2022 01:38 PM
» Replies: 0
» Views: 640
|
Painting
Last Post: Rare Pony
12-14-2022 06:24 PM
» Replies: 2
» Views: 1971
|
WELCOME ALL NEW MEMBERS INTRODUCE YOURSE...
Last Post: JTS71 Mach1
08-31-2022 01:36 PM
» Replies: 82
» Views: 157075
|
1970 mach 1 matching numbers
Last Post: Kstweeter
08-31-2022 10:31 AM
» Replies: 1
» Views: 1087
|
Brake booster/servo hose length
Last Post: JTS71 Mach1
08-23-2022 09:40 AM
» Replies: 7
» Views: 3006
|
New Member
Last Post: JTS71 Mach1
08-20-2022 11:18 AM
» Replies: 2
» Views: 1501
|
smooth window operation on 70 Mach
Last Post: CUSTOMMISER
08-15-2022 12:10 PM
» Replies: 2
» Views: 1482
|
Blinkers on solid
Last Post: busted21
08-09-2022 03:58 AM
» Replies: 14
» Views: 8728
|
Blinkers on solid when lights on.
Last Post: JTS71 Mach1
08-08-2022 12:06 PM
» Replies: 1
» Views: 1720
|
351 cj running hot
Last Post: busted21
08-08-2022 12:13 AM
» Replies: 5
» Views: 3411
|
Major Winter projects
Last Post: JTS71 Mach1
07-09-2022 05:12 AM
» Replies: 49
» Views: 21300
|
Happy Fathers Day!!!
Last Post: JTS71 Mach1
06-20-2022 02:34 AM
» Replies: 0
» Views: 1686
|
1969 Raven Black 390 Looking For
Last Post: mason1958
06-11-2022 09:48 AM
» Replies: 10
» Views: 15088
|
|
|