Recent Topics
Best deal on a new battery, now?
by surfstar
03/30/17 01:21 PM
Meet or Exceeds Requirements
by RAK
03/30/17 12:51 PM
Scan tools with ABS bleeding capablity?
by nthach
03/30/17 12:37 PM
Signs of battery overcharge
by DrRoughneck
03/30/17 12:15 PM
Valve Adjustment Methods and Pros/Cons
by Reddy45
03/30/17 12:11 PM
AcDelco PF64
by mobilaltima
03/30/17 11:36 AM
GM reduced power message, anyone?
by OneEyeJack
03/30/17 11:33 AM
Torque Pro App and Smartphone constantly in use
by 2James1
03/30/17 11:12 AM
Question about viscosity...
by NJ_Car_Owner
03/30/17 10:51 AM
2015 Nissan Frontier traction control
by millerbl00
03/30/17 10:33 AM
Bosch QuieCast pads can't stop an annoying squeal.
by BigD1
03/30/17 10:21 AM
Pennzoil 0w20 vs Mobil 1 0w20 - application
by FB09l
03/30/17 09:59 AM
Kudos Kia for Online Service Manuals
by doitmyself
03/30/17 09:55 AM
2005 Toyota Matrix 10,600 Maxlife FS
by SatinSilver
03/30/17 09:49 AM
AutoZone censoring low rating reviews
by salcuta88
03/30/17 09:42 AM
Formula Shell 5 qt $9.88 at Home Depot
by BigD1
03/30/17 08:48 AM
Kingsford charcoal 2-pack 18.6 lbs $9.88
by BigD1
03/30/17 08:34 AM
Mac vs PC for a new laptop
by Rat407
03/30/17 07:57 AM
Frantz Bypass
by beanoil
03/30/17 07:32 AM
Throwback Thursday , 1950 Indy 500 Mobil oil video
by shanneba
03/30/17 07:28 AM
Newest Members
starshockey, Jarredm, KovMan, John300ZX, MariaKaras
61021 Registered Users
Who's Online
61 registered (bbhero, 4WD, aquariuscsm, Alfred_B, 901Memphis, AZjeff, 6 invisible), 2304 Guests and 14 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
61021 Members
66 Forums
263037 Topics
4342956 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#1754169 - 01/24/10 06:40 PM Log Splitter Hydraulic Oil
Woodsroad Offline

Registered: 07/07/09
Posts: 6
Loc: SE PA
Any suggestions on fluid for a log splitter?
This splitter has a Haldex 2-stage 16 GPM pump and a 5" cylinder. The splitter came with a return filter only, I added a suction filter. I've run Hydra-Tranz in it from the start (45 hours now), only because it's what I had on hand at the time. Any other suggestions or information on what works best in this kind of application?


#1754200 - 01/24/10 07:15 PM Re: Log Splitter Hydraulic Oil [Re: Woodsroad]
salesrep Offline

Registered: 08/22/03
Posts: 3391
Loc: lllinois
I deal with a logsplitter co. and their factory fill is iso 46 and/or atf syn
"A patriot must always be ready to defend his country against his government."

Edward Abbey

#1754921 - 01/25/10 10:58 AM Re: Log Splitter Hydraulic Oil [Re: salesrep]
Woodsroad Offline

Registered: 07/07/09
Posts: 6
Loc: SE PA
What would be the difference between Hydra-Tranz and synthetic ATF or an ISO 46 fluid?


#1754944 - 01/25/10 11:15 AM Re: Log Splitter Hydraulic Oil [Re: Woodsroad]
MolaKule Offline

Registered: 06/05/02
Posts: 17884
Loc: Iowegia - USA
What does your manf. specify in terms of an ISO viscosity for your hydraulic fluid?

Hydra-Tranz has an ISO 68 viscosity rating or about a 9.5 [email protected] or about a 30 weight.

A typical DexronIII/Mercon synthetic ATF has viscosity of about 7.5 cSt.

I prefer an ISO 46 to 68 synthetic or Blend hydraulic fluid since it contains a higher level of anti-wear additives.
Don't worry about your eyesight failing as you age. It's to protect you from heart attacks as you walk past the mirror. smile

#1754991 - 01/25/10 11:51 AM Re: Log Splitter Hydraulic Oil [Re: MolaKule]
Woodsroad Offline

Registered: 07/07/09
Posts: 6
Loc: SE PA
The manufacturer does not make a specific recommendation on hydraulic oil.

#1800518 - 03/02/10 08:17 AM Re: Log Splitter Hydraulic Oil [Re: Woodsroad]
George Bynum Offline

Registered: 12/18/04
Posts: 228
Loc: Greenville SC
Originally Posted By: Woodsroad
Any suggestions on fluid for a log splitter?
Generally any good heavy duty AW (antiwear) fluid, probalby in a "46" (ISO46) or "68" viscosity. Your system is positive displacement, that is the pump is always pumping fluid; you should let the oil warm to (OPINION) 90F at least before going to full pressure. Many people use ATF, not a bad choice really, but it, like most vehicle fluids captures and holds moisture; this is not a good characteristic for hydraulics. If you use it, change it every year or so.
Originally Posted By: Woodsroad
The splitter came with a return filter only, I added a suction filter.
Beware suction FILTER; if it is a strainer, ok. Restrictions and air ingression in inlets may destroy more pumps than anything else. Do note that your system always runs fluid through the return filter when the pump is turning, a good thing. You might look at the return filter specs and improve them; a Beta rated element, B(10)>50, should be sufficient for you. Those 25 micron paper media things are JUNK in hydraulic applications. What brand and part number is your return element?