flushing 850 gearbox with Dextron II

charlotte001 · Jan 18th, 2010, 23:55

As I've been given two gallons of new Dextron II ATF fluid Ive decided that I will use it to flush my gearbox as it's in dire need. Does anyone see any issues I will get ? Once the flushing is done I will be refilling with Dextron III also a small flush to rid most of the Dextron II

Vee70 · Jan 19th, 2010, 07:58

The question is does your gearbox really need a flush ? Perhaps if it's done 200k miles and never been changed but generally I think the filter should be holding most of the crud and the magnet a bit more of it.

Personally I'd drop the sump and clean it, renew the filter, new gasket and stick it back together with approved fluid. I can't say whether the Dexron II will harm the gearbox or not but is it worth the risk ?

charlotte001 · Jan 19th, 2010, 08:31

it really needs a flush the fluid is going brown. I wont be using the Dexron II simply flushing the box through seems a waste just to ditch 2 gallons the spend extra on III ill see if anyone with a 740 could use it

Merc85 · Jan 19th, 2010, 09:07

Hi there 3 is just a supercession of Dexron2, there are both suitable

charlotte001 · Jan 19th, 2010, 09:10

Even though the Gearbox specs require Dexron IIE you think Dexron II would still do the job?

liuleichan · Jan 21st, 2010, 09:55

Quote:

Originally Posted by charlotte001

Even though the Gearbox specs require Dexron IIE you think Dexron II would still do the job?

To be honest, IIE is stated as the minimum spec.

Even though you're just flushing (ie not driving / shifting with it in), I wouldn't. I'd use either IIE or III.

Jan 18th, 2010, 23:55	#1
charlotte001 Premier Member Last Online: Jul 26th, 2012 11:13 Join Date: Jul 2009 Location: norwich	flushing 850 gearbox with Dextron II As I've been given two gallons of new Dextron II ATF fluid Ive decided that I will use it to flush my gearbox as it's in dire need. Does anyone see any issues I will get ? Once the flushing is done I will be refilling with Dextron III also a small flush to rid most of the Dextron II __________________ Previous Volvos:850 GLT 2.5 20V Auto Saloon Silver. 1997 850 T-5 Auto Estate Nautic Blue Chipped ECU, V70 TCV, Carbon Cased Filter, 17inch alloys, Rattling Engine masking the suspension rattles. Engine doesn't rattle anymore

Jan 19th, 2010, 08:31	#3
charlotte001 Premier Member Last Online: Jul 26th, 2012 11:13 Join Date: Jul 2009 Location: norwich	flush it really needs a flush the fluid is going brown. I wont be using the Dexron II simply flushing the box through seems a waste just to ditch 2 gallons the spend extra on III ill see if anyone with a 740 could use it __________________ Previous Volvos:850 GLT 2.5 20V Auto Saloon Silver. 1997 850 T-5 Auto Estate Nautic Blue Chipped ECU, V70 TCV, Carbon Cased Filter, 17inch alloys, Rattling Engine masking the suspension rattles. Engine doesn't rattle anymore

Jan 19th, 2010, 09:07	#4
Merc85 Premier Member Last Online: Apr 19th, 2024 12:58 Join Date: Dec 2009 Location: Harwich	dexron11 dexron111 Hi there 3 is just a supercession of Dexron2, there are both suitable __________________ HLM304, Forge unos 17.5psi at 3.8 bar, 18t, Me7 Manifold, Blues, Walbro, De-cat, Ported n Polished Head, 3" Dp stainlesss exhaust, Carbon Air intake, Polly Bushed thoughout.

Jan 19th, 2010, 09:10	#5
charlotte001 Premier Member Last Online: Jul 26th, 2012 11:13 Join Date: Jul 2009 Location: norwich	dexron II Even though the Gearbox specs require Dexron IIE you think Dexron II would still do the job? __________________ Previous Volvos:850 GLT 2.5 20V Auto Saloon Silver. 1997 850 T-5 Auto Estate Nautic Blue Chipped ECU, V70 TCV, Carbon Cased Filter, 17inch alloys, Rattling Engine masking the suspension rattles. Engine doesn't rattle anymore

Jan 19th, 2010, 07:58	#2
Vee70 Junior Member Last Online: Nov 11th, 2011 13:28 Join Date: Dec 2009 Location: Munich	The question is does your gearbox really need a flush ? Perhaps if it's done 200k miles and never been changed but generally I think the filter should be holding most of the crud and the magnet a bit more of it. Personally I'd drop the sump and clean it, renew the filter, new gasket and stick it back together with approved fluid. I can't say whether the Dexron II will harm the gearbox or not but is it worth the risk ?

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