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Topic: Delo 400 LE verses Delo SDE (Read 2061 times) previous topic - next topic

Delo 400 LE verses Delo SDE

I am planning to change the fluid and filters in my hydraulic system and my canister calls for Delo 400 LE.  However, I can not find the LE because it has been replaced by the SDE which is the new improved blend.  From what I have read the SDE has lower zink and potassium levels which helps with polution but is needed to reduce wear.  I like to stick with original fluids but sometimes becomes imposddible.  So the question is can i switch to the Delo 5w30 LE synthetic or  just switch to Roselle 15w30 that I use in the engine.

Jason
Jason
1999 U320 36'

Re: Delo 400 LE verses Delo SDE

Reply #1 –
Hydraulic fluid is essentially a closed system, lasts a long time as it's not polluted by combustion products but wear particles. Engine oil is not a hydraulic fluid, just as hydraulic fluid is not an engine oil. New Oil blends typically exceed the former specifications
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Delo 400 LE verses Delo SDE

Reply #2 –
The hydraulic system on the '99 calls for Delo 400 15/40 the oils are always backwards compatible. The newer se will work fine.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Delo 400 LE verses Delo SDE

Reply #3 –
Quote from: jerrett –
So the question is can i switch to the Delo 5w30 LE synthetic or  just switch to Roselle 15w30 that I use in the engine.
I don't think I would switch to synthetic for this application - stick to conventional oil.  In the hydraulic system, the brand of oil is not so important, but you want to use the correct weight and type as specified by the manufacturer.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Delo 400 LE verses Delo SDE

Reply #4 –
Quote from: Old phart phred –
Engine oil is not a hydraulic fluid, just as hydraulic fluid is not an engine oil. New Oil blends typically exceed the former specifications

Actually, motor oil, hydraulic fluid or ATF can all be used in hydraulic systems.

BUT, IT IS CRITICAL THAT YOU USE THE OIL THAT YOUR SYSTEM WAS DESIGNED FOR. 

MOST FORETRAVEL HYDRAULIC SYSTEMS USE 15-40 MOTOR OIL.  STICK WITH THAT.

Sorry, have not researched the LE vs SLE difference.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Delo 400 LE verses Delo SDE

Reply #5 –
Went with Amsoil 15w40 in mine,same as the engine oil.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Delo 400 LE verses Delo SDE

Reply #6 –
When we lost a hydraulic hose on a trip, I just bought a couple of gallons of 15-40 motor oil. That's what the label on the tank calls for.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Delo 400 LE verses Delo SDE

Reply #7 –
Not to open the old can of worms, but I would not go to a synthetic in an old system. I run Rotella T4 15/40 in mine
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Delo 400 LE verses Delo SDE

Reply #8 –
Know what you mean about the can of worms but have been installing Amsoil in "old systems" since the mid 70's,never had any
problems and that includes many different automatic transmissions.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Delo 400 LE verses Delo SDE

Reply #9 –
I've changed over all our cars to synthetic in the engines and transmissions and rear ends with no ill effects. I would do the U300 but I like to change once a year and can get Delo 100 for $15/gallon and change. Mostly Mobil 1 or O'Reilly oil. Amsoil is good stuff. I use it in all the two cycle dirt bikes. Too expensive for the coach.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Delo 400 LE verses Delo SDE

Reply #10 –
Thank you all for your suggestions.  I found some Delo 400 LE 15w40 at a local parts store so I can stay with the same oil that I used before.  No synthetic for the hydraulic system.

Jason
Jason
1999 U320 36'