[DeTomaso] Metal particles in Transaxle
jderyke at aol.com
jderyke at aol.com
Mon Jun 24 20:51:39 EDT 2019
IMHO, I agree with JIm. Magnetic wear particles will come from steel synchro rings & sleeves and the cast iron shift forks against the steel gear collars, plus the limited-slip clutches. Chunks come from something breaking inside. A magnetic drain plug and a yearly lube replacement (drained hot!) is our best defense against the inevitable $5000 ZF overhaul.
I've never used synthetic differential lubes but I do recommend LSD slip-agent additives as needed. Easy way to tell if your ZF LSD is still working is a short drive around town in the rain. An unhappy ZF LSD will jerk noticably in tight low speed turns on slippery asphalt, telling you it needs an additive. NOT jerking may either mean things are fine, or the LSD function has gone away.
-----Original Message-----
From: Pantdino via DeTomaso <detomaso at server.detomasolist.com>
To: b.hower3400 <b.hower3400 at yahoo.com>
Cc: detomaso <detomaso at server.detomasolist.com>
Sent: Mon, Jun 24, 2019 4:26 pm
Subject: Re: [DeTomaso] Metal particles in Transaxle
I think the meaningful experiment would be to run one ZF with GL-5 oil
and one with GL-4 and compare debris buildups.
Chuck, do you use GL-4 oil or GL-5?
Jim
-----Original Message-----
From: B Hower via DeTomaso <detomaso at server.detomasolist.com>
To: 'Wayne Boian' <wayneboian at windstream.net>; Charles Engles
<cengles at cox.net>
Cc: detomaso <detomaso at server.detomasolist.com>
Sent: Mon, Jun 24, 2019 4:17 pm
Subject: Re: [DeTomaso] Metal particles in Transaxle
Synchros being steel on steel, I believe any ware there could show
up
on magnet ...
Bud #3400 ( Drive it like there is no tomorrow -- for there may not
be
! )
On Monday, June 24, 2019, 11:05:44 AM CDT, Charles Engles
<[1]cengles at cox.net> wrote:
Dear Wayne,
Fret not. Over thirty years and two Panteras and two
ZFs
and episodes of dino transaxle oil as well as synthetic, I observed
the
little accumulation of metal particles on the magnet just as you
have.
Never was a ZF lube change without some noticeable accumulation. ZF
experts tell that is normal. I would say that your picture shows a
normal
amount of debris. It does not show any large nor medium chunky bits.
It
will never come out clean when changed at normal intervals. Have a
good
nightcap this evening and rest well.
Warmest regards, Chuck Engles
-----Original Message-----
From: DeTomaso
[mailto:[1][2]detomaso-bounces at server.detomasolist.com] On
Behalf
Of Wayne Boian
Sent: Monday, June 24, 2019 10:32 AM
To: [2][3]detomaso at server.detomasolist.com
Subject: [DeTomaso] Metal particles in Transaxle
I change the oil in the Transaxle last night and found metal
particles
on
the magnetic drain plug. See attached photo.
The car has maybe 3,500 to 4,000 miles since the fluid was last
changed.
There was no other foreign material in the container used to drain
the
fluid.
How mush sleep should I be loosing over the amount of metal
particles
in
the photo.
FWIW, I am using Castrol Limited Slip 80W-90 in the transaxle.
Thanks
Wayne
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-------------- next part --------------
IMHO, I agree with JIm. Magnetic wear particles will come from steel
synchro rings & sleeves and the cast iron shift forks against the steel
gear collars, plus the limited-slip clutches. Chunks come from
something breaking inside. A magnetic drain plug and a yearly lube
replacement (drained hot!) is our best defense against the inevitable
$5000 ZF overhaul.
I've never used synthetic differential lubes but I do recommend LSD
slip-agent additives as needed. Easy way to tell if your ZF LSD is
still working is a short drive around town in the rain. An unhappy ZF
LSD will jerk noticably in tight low speed turns on slippery asphalt,
telling you it needs an additive. NOT jerking may either mean things
are fine, or the LSD function has gone away.
-----Original Message-----
From: Pantdino via DeTomaso <detomaso at server.detomasolist.com>
To: b.hower3400 <b.hower3400 at yahoo.com>
Cc: detomaso <detomaso at server.detomasolist.com>
Sent: Mon, Jun 24, 2019 4:26 pm
Subject: Re: [DeTomaso] Metal particles in Transaxle
I think the meaningful experiment would be to run one ZF with GL-5
oil
and one with GL-4 and compare debris buildups.
Chuck, do you use GL-4 oil or GL-5?
Jim
-----Original Message-----
From: B Hower via DeTomaso <[1]detomaso at server.detomasolist.com>
To: 'Wayne Boian' <[2]wayneboian at windstream.net>; Charles Engles
<[3]cengles at cox.net>
Cc: detomaso <[4]detomaso at server.detomasolist.com>
Sent: Mon, Jun 24, 2019 4:17 pm
Subject: Re: [DeTomaso] Metal particles in Transaxle
Synchros being steel on steel, I believe any ware there could
show
up
on magnet ...
Bud #3400 ( Drive it like there is no tomorrow -- for there may not
be
! )
On Monday, June 24, 2019, 11:05:44 AM CDT, Charles Engles
<[1][5]cengles at cox.net> wrote:
Dear Wayne,
Fret not. Over thirty years and two Panteras and two
ZFs
and episodes of dino transaxle oil as well as synthetic, I observed
the
little accumulation of metal particles on the magnet just as you
have.
Never was a ZF lube change without some noticeable accumulation.
ZF
experts tell that is normal. I would say that your picture shows a
normal
amount of debris. It does not show any large nor medium chunky
bits.
It
will never come out clean when changed at normal intervals. Have a
good
nightcap this evening and rest well.
Warmest regards, Chuck Engles
-----Original Message-----
From: DeTomaso
[mailto:[1][2][6]detomaso-bounces at server.detomasolist.com] On
Behalf
Of Wayne Boian
Sent: Monday, June 24, 2019 10:32 AM
To: [2][3][7]detomaso at server.detomasolist.com
Subject: [DeTomaso] Metal particles in Transaxle
I change the oil in the Transaxle last night and found metal
particles
on
the magnetic drain plug. See attached photo.
The car has maybe 3,500 to 4,000 miles since the fluid was last
changed.
There was no other foreign material in the container used to drain
the
fluid.
How mush sleep should I be loosing over the amount of metal
particles
in
the photo.
FWIW, I am using Castrol Limited Slip 80W-90 in the transaxle.
Thanks
Wayne
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