best oil for six-pots

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Eric_T
Posts: 1408
Joined: Sat Dec 31, 2005 11:57 am
Location: North Wales

Post by Eric_T » Thu May 17, 2012 3:01 pm

cambs1594 wrote:well im not going to jinx it by fiddling with it, that engine hasnt been a spot of bother since the day it was built, even with the pump opened out like it is. Heres something else to throw into the argument, 1690 specs are as stated, thats non turbo? Now would a turbo oil pump (1690t/1694) be set slightly higher to cater for the turbo?. Reason being, if this was one of the tractors that had its oil pump changed under warranty (i dont know if it did or not, the last owner couldnt remember) if it had the later, turbo oil pump fitted, maybe thats why its reading higher? I can assure you though, how this tractor gets worked, if there was anything amiss inside that engine, it would have gone bang by now

Max rated speed being 2350rpm? Not 2750rpm like this one is. Are those pressures in the manual with the engine hot or cold, the readings ive gave are for a cold, freshly started engine. Shall i note the readings when ive had it working all day?

No, 1690T ran at the same presure, but had a higher flow rate, hence the pump had longer gears.

Figures are for un-adjusted tractors yes. DB would not, and could not reccomend that the engine's settings be modified, and therefore would not have published data to back that up.

In practice, from an engine in good condition, with a good quailty oil in it, you should not see a signifiicant difference in pressure drop between cold and working temperature engines.

Eric_T
Posts: 1408
Joined: Sat Dec 31, 2005 11:57 am
Location: North Wales

Post by Eric_T » Thu May 17, 2012 5:44 pm

More than satisfied. Well done you.

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jimc1390
Posts: 2253
Joined: Sun Jan 11, 2009 10:27 pm
Location: cornwall

Post by jimc1390 » Thu May 17, 2012 8:14 pm

hmmmm issues can see this from both sides, high preasure looks a good back up but you wouldnt leave a gear pump like the back end one blowing off the relief valve ? i myself would probably leave it alone and not jinx it but it does make you wonder why it producing so much preasure, a gear pump i think creates it max out put at 1800 rpm, anything beyond that it will begin to cavitate, i cant see there should be much difference between rated speed and your 2750rpm cambs but is there?

just a quick story a mate told me last year, when he was flogging 56 series ih new they rebuilt a 956, on start up it would stall straight away, after many checks around it he decided to fire it up at full chak and rev past whatever was stalling it, it ran but as soon as he backed of it stalled again , turned out to be seriously high oil preasure locking it up, make of that what you will but hes a genuine chap so i believe him
db 990 selectamatic
case ih 1594 com ed
db 1390 gd90 loader

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jimc1390
Posts: 2253
Joined: Sun Jan 11, 2009 10:27 pm
Location: cornwall

Post by jimc1390 » Thu May 17, 2012 10:54 pm

dont blame you
db 990 selectamatic
case ih 1594 com ed
db 1390 gd90 loader

bmcgahan
Posts: 299
Joined: Fri Dec 30, 2005 2:33 pm
Location: Donaghmore, County Tyrone, Northern Ireland
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Post by bmcgahan » Thu May 17, 2012 11:13 pm

Castrol power 15/40, i personally wouldnt use UTO's, full of wet brake additives etc and too light for brown engine. Did DB put 20/50 in them? Dont think it can be got anymore..

raymondjtownend
Posts: 478
Joined: Fri Dec 30, 2005 4:47 pm
Location: nr.skipton north yorkshire

oil

Post by raymondjtownend » Fri May 18, 2012 8:07 am

hi fleet factors where i get oils and filters stock 20w50 that is my concern suto has additives for other jobs and 20w50is engine oil only

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calvin
Posts: 490
Joined: Sun Apr 04, 2010 10:41 pm
Location: ireland / northern ireland

RE: 6 pot oil

Post by calvin » Sun Aug 05, 2012 9:05 pm

striaght 50 all the way! its like tar
3 pot , 4 pot and the MIGHTY 6 POTT!

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calvin
Posts: 490
Joined: Sun Apr 04, 2010 10:41 pm
Location: ireland / northern ireland

RE: 6 pot oil

Post by calvin » Sun Aug 05, 2012 9:08 pm

striaght 50 all the way! its like tar
3 pot , 4 pot and the MIGHTY 6 POTT!

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6-POT-PHIL
Posts: 1345
Joined: Sat Dec 22, 2007 9:07 pm
Location: Huddersfield, W Yorks. (Home of David Brown Tractors)

Post by 6-POT-PHIL » Sun Aug 05, 2012 9:41 pm

15/40 Ring free from Morris Lubricants is what i use.

Phil :)
1961 850 Implematic Ex DB test tractor (now sold)
1960 950 Implematic
1970 990 12 speed Selectamatic
1976 996 Loader tractor
1987 'E' 1594 4WD Hydra-Shift
1985 'C' 1694 4WD Hydra-Shift
ImageImage

Six in line sounds mighty fine!!

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ollek
Posts: 3990
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Post by ollek » Mon Aug 06, 2012 9:06 am

About Tractor Oil Universal (TOU), or UTO if you like, do not have additives for wet brakes but STOU (Super Tractor Oil Universal) have. In Finland we have used STOU with SAE 10W30 in David Brown engines,transmissions and wet brakes and we have had no problems. And now someone will rewply that this is all wrong, oils have been a hot subject as long as I can remember.

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bigdavesproule
Posts: 314
Joined: Tue Jan 12, 2010 10:49 pm
Location: Castlederg, Co. Tyrone

Post by bigdavesproule » Tue Aug 07, 2012 10:55 am

used suto in zetor engines for years with no dramas, and back end of a few, but our 10540 take ep90 back end oil, remember hearin that hydrashift takes utto in back end, or universal tractor transmission oil
dave

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