Mortis

Does anyone have a picture of their invoices from the recall ?

Hi. Thanks for the info. Im happy for the confirmation that it was the Mechatronics central hydraulic fluid that was switched from synthetic to mineral, as I suspected all along. As such my car is newer and definitely has the right fluids so nothing to worry about on that front. Coincidentally Im from India and a member of the TeamBHP forums so Ive already gone though all those threads in detail, this thread was mainly to double check and keep my sanity intact and verify facts with people who have actually gone through the recall. There was no recall in India and the gearbox was introduced here in 2013 I believe. However, it is mainly this thread : https://www.briskoda.net/forums/topic/444027-201718-dq200-dsg-34f7-service-campaign-any-further-issues/ which made me doubt which of the two fluids was problematic. A member has posted his invoice from the recall and the part number for the fluid that was changed matches up with the GEARBOX oil and not the MCU fluid ! The quanity (2 litres) also lines up and reinforces that fact that it was the Gearbox oil that got swapped out atleast in this particular instance of the 34F7 campaign.

Thanks. I know that the synthetic oil was causing issues due to a high sulphur content. As such I have been through a lot of threads, including ones on this forum and Im just looking for an answer in black and white along the lines of "It was the gearbox oil and not the mechatronics fluid that was switched to mineral" because while it is being discussed, there is no explicit mention of which of the two fluids it is. As I said, I came across mentions of the sulphur in the oil causing a PCB to corrode and as far as I can tell, there isnt a circuit board in the gearbox section and then there is an invoice from the recall in the thread that I linked which mentions that the fluid that was changed out was the gearbox oil so theres a bit of a conflict happening in my mind which Im trying to sort out.

Hello, I actually own a VW Polo GT with the infamous DQ200 gearbox (Gen 2 I believe) but the Briskoda forums seem to have the most detailed topics and discussions regarding this infamous gearbox which is why I decided to create an account to clear up something I was unsure about. Short Version : The DQ200 has 2 fluids - "Gearbox Oil" and "Mechatronics Fluid". Which one was changed from synthetic to mineral during the recall ? Long version : While discussing this gearbox most people seem to play a bit fast and loose with the way they refer to these two fluids in the various discussions I have seen on the internet and while I was convinced earlier that it was the Mechatronics fluid that was swapped, I now have a pretty strong doubt that it is actually the Gearbox oil that was actually "upgraded" from synthetic to mineral. All the discussions I came across said that the synthetic fluid had a high sulphur content which caused corrosion and enough of them said that the high sulphur content caused CORROSION OF A CIRCUIT BOARD leading to failure as far as I know only the mechatronics unit has a circuit board that comes into contact with the fluid and thereby assumed that it was the Mechatronic Fluid that had to be changed. Then I came across this thread : https://www.briskoda.net/forums/topic/444027-201718-dq200-dsg-34f7-service-campaign-any-further-issues/ A couple of posts down it has a picture of a bill from the recall and the part number and quantity match the Gearbox Oil used in the DQ200. So as a result of that I am thoroughly confused as to which of the two fluids used in the DQ200 got swapped to mineral due to the way people refer to these fluids and also the mentions of a corroded circuit board that I have come across which is why I created this thread for a straight up confirmation to sort things out at my end just for sanity's sake because I would like to keep the car a while longer and would like to avoid a fat bill down the line if it can be avoided. I have actually changed both of these myself as a precaution when the car touched 50k using the VW fluids for both, since the VW dealerships refuse to do a fluid change and claim that the gearbox is sealed for life and has no drain interval. It was also VERY hard to get both VW branded fluids in the aftermarket so I am keeping options open for non VW branded fluids for the next change and doing my research for it. The gearbox oil is just 75W90 manual transmission gear oil but mineral based right ? Any standard that I should look out for when looking for alternatives or is there a synthetic option that is low sulphur that I could use ? I also wanted to confirm something about the gearbox oil volume. I know that the standard fill volume is 1.7L. Some of the replacement guides I referred to recommended refilling the same volume of gearbox. However I could only drain about 1.3L of gearbox oil which I felt was too low especially since I live in a hot tropic climate and drive in heavy traffic quite often so I refilled the standard 1.7L of fresh gearbox oil. Some research tells me that the MAX oil capacity for the gearbox is 2L to the brim and even if you do fill more than the recommended 1.7L, its not a big deal. Is this true ? No problems after a few thousand Ks of driving post the refill. The old oil itself wasnt too bad but obviously new oil is better and Im sure that having the right volume also helps. I may have gone overboard but I recently bought an accumulator upgrade/repair kit and I plan to preemptively install it rather than wait for a failure that is relatively common and would lead to me being stranded as I regularly do a couple of road trips a month. The kit came with Ravenol SFF synthetic hydraulic fluid and I plan to use that when I fit the accumulator. Is that fine or should I stick to the VW OEM hydraulic fluid ? Lastly, is there an easy way to replace the Mechatronic filter without disassembling the whole unit ? Apologies for the wall of text and thank you for any insight in advance !