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  1. czechmate

    czechmate Newbie

    Hello all , does anyone know what the correct gearbox oil grade and type is for a trabant 601 , and can it be changed with the gearbox in the vehicle and where would be the best place to buy this from , thanks for your help , kind regards ......Bart
  2. Keri

    Keri Leader

    This topic has been discussed extensively on several threads…

    Here's two:



    The short answer:
    The "correct" fluid is German specification, "HLP-68", which is available through the vendors listed in the Vendors thread.

    Changing the fluid is as simple as pulling the drain plug on the bottom to drain, and putting fluid in the filler plug on top. There is a "level plug" on the left side, for checking the level.
    Capacity is around 1 liter to fill to the level plug, though some books state 1.3 Liter.

    The fluid I use, with several tens of thousands of kilometers of improved results, (my subjective opinion) is Dexron 3 Automatic Transmission Fluid. After the first several changes, I stopped using the level plug, and just put in 1 liter after draining.

    It is important to not use a thick gear oil, particularly not one with EP additives for Hypoid gears, like 80-90W GL-5. This will cause shifting troubles.
  3. czechmate

    czechmate Newbie

    thank very much Keri this is of great help , I hope all is well with you
  4. Ron

    Ron Premium Member Forum Donor

    I've done a couple of thousand miles on the HLP68 from Trabant welt, as Keri says, a one litre bottle does it, and I have no troubles, so would recommend.
  5. turbofiat124

    turbofiat124 Premium Member Forum Donor

    For those within the United States, I got a reply from Citgo concerning their Mystik AW 68 oil sold at Tractor Supply. It is the American equivilant to HLP 68. it's a mineral based oil with a VG of 68 and contains the same zinc antiwear compounds of HLP 68.

    It's not very expensive. Less than $20 for a 2 US gallon jug.
    Keri likes this.
  6. DaveinOz

    DaveinOz Aussie Trabant Nutter Forum Donor

    Hey team, thought I would just add to this that 'ISO 68' hydraulic oil seems to be an identical specification - if you check the product data sheet they all seem to list that it is equivalent to DIN HLP type (DIN 51524 part 2 and 3)

    For those of us outside Europe this is quite easy to get, I just bought 5 litres from my local auto parts store for $29 - enough to do 5 fluid changes!

    All the major manufacturers seem to offer this fluid:

    I have no idea when the fluid in my trabi was last changed so with 5 litres on hand I'm going to change the fluid once and then take the car on a short drive, then change it again to ensure the inside of the gearbox is nice and clean!
  7. Keri

    Keri Leader

    A short drive won't have much effect unless it is truly monstrously dirty, as Comrade Trabi once was.
    You'll probably get better effect by driving it for a week or so.

    To get Comrade Trabi cleaned out from "monstrously dirty", it took several changes using high-detergent ATF over a period of several months, and thousands of kilometers. Using a regular HLP, which has less detergent, would take longer.
  8. turbofiat124

    turbofiat124 Premium Member Forum Donor

    The guy working on my transmission said it had sludge buildup in the corners. Even after running Detron for over a year. By the way. He said he didn't get a snap ring seated on third gear. That was what was causing the grinding. He said it would be ready tomorrow.
  9. czechmate

    czechmate Newbie

    thanks for your replies guys , I changed the gearbox oil and managed to find the correct oil HLP 68 , if anyone is struggling to find it hose and tubular services in Luton can supply it , but its not cheap and can only supply it in 25 litre containers which is great because you can change the oil a few times to flush the gearbox through , I also found out recommended oil change intervals are 30,000 , how true this is iam unsure , I think best to change it more regular , if anyone wants the contact number for hts let me know
  10. Luke

    Luke Loyal Comrade

    Hi all, was just reading through this thread and wanted to confirm that this oil is the one you're talking about @turbofiat124



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