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Gazwould

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About Gazwould

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    Advanced Member

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    Somerset
  • Vehicle Driven
    i40 Premium Tourer

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  1. That's good , I was under the impression oil analysis was much more than that . Who is that with and what would their typical analysis look like ?
  2. As above rather than pay Mr Hyundai..
  3. Give you a clue , it's in the small print !
  4. When they quote for life , gearbox oil , chains , tensioners etc they really mean 10 years / 100K . Everything now is made of chocolate , even the so called premium brands are rubbish . I returned some outdoor stainless steel lanterns recently only 3 years old , rusted , yet 30+ year ss cutlery subjected to washing up liquid salts are mint . Not enough chromium in the cheap Chinese steel these days . The teeth usually go on sprockets due to the tensioner going weak or breaking , the slack chain whips the teeth wearing them down and puts lovely bits of metal in the oil for the turbo , camshaft and big end bearings to play with .
  5. Well above 45 mpg hasn't been seen as an average journey in the Premium . Bet they didn't replace the turbo that was beginning to get wrecked with diesel contaminated oil . All I have to say is.. And whilst in get them to paint the dam thing yellow !
  6. Sounds like diesel is getting in , the diesel will wreck the oils properties . As the graph suggests stock peak torque is near 3K , his previous 2.0 tdi was sub 1800 rpm .
  7. It's a bit quiet in here , lol , too used to being spoilt by high volume forums you could ask and get a creditable answer in as little as 3 minutes . Dealer diagnostics clear and test drive confirm my 'characteristic' theory . Looking at a dyno plot it's basically got zero torque at low revs ( 1000rpm ) , it's got 100 lbft at 1500 rpm . There's only one way to fix this characteristic...
  8. I still can't understand looking back why no one has tried lower viscosity gearbox oils . One thing that changes dramatically from cold to 100°C regarding oil is viscosity , a measurement of viscosity is centiStokes or cSt . 1 cSt = 1 mm2/s = the thickness of water . Hyundai oe is 75W85 now you probably can't obtain a data sheet for it to get it's precise viscosities @ 40°C and 100°C , now if you shop for this on fleabay you'll get this.. http://m.ebay.co.uk/itm/HYUNDAI-i40-1-7-CRDi-11-FUCHS-MANUAL-GEAR-BOX-OIL-TITAN-SINTOFLUID-1-LITRE-/182219111534?hash=item2a6d1afc6e%3Ag%3AoT4AAOSwSv1XlejG&_trkparms=pageci%3A3f07d0c4-37be-11e7-8133-74dbd1809780%7Cparentrq%3A012178d115c0ab4cd1440358ffff23da%7Ciid%3A11 Now it's a 75W80 ( Fuchs Titan Sintofluid SAE 75W-80 , 49.8 centiStokes @ 40°C ) and not a 75W85 , now these guys know a few things about oil and I always judge an oil company by it's ability to have a Ester Racing marketed oils with it's line up , they do in abundance plus they have a very niche C3 Ester oil . So why lower the viscosity ? Better cold shifts as thick when cold baulks the synchromeshes . And fuel economy through less drag with no loss of protection . Fuchs has done exactly the same for my VW gearbox spec , oe is a thicker 75W90 but they recommend the very same 75W80 Sintofluid above and I have it in that box . Don't worry about the GL4 to GL5 bit either there are GL5's better suited to diffs that have the higher EP additives thus higher levels of sulphur ( they all have sulphur that's why gearbox oil stinks ) that can corrode yellow metals these are distinguished by Fuchs by their lable having an image and description of being manual gearbox or transaxle fluid . Ever heard of fluids being dual spec GL 4/5 or GL4+ ? I assure you there must be low medium and high levels of EP additives in GL5's depending on their purpose . I did read on an American forum one guy suggesting Red Line MT90 , but this is a 75W90 and a thick 90 at that @ 90 centiStokes @ 40°C , but this is going the wrong way , strangely I've this oil in another car and when cold the gears are stiff !! So my recommendation for someone to try as going from a 75W85 to a 75W80 isn't a big enough difference I would go to a 70W75 Fuchs Titan Sintofluid FE SAE 75W , 40.8 centiStokes @ 40°C .
  9. Injector ?
  10. That's why it looks German , Peter Schreyer of Bavaria !
  11. Blue led , what William Kelvin ?
  12. Yeah , lol . A tuner did mention it after I mentioned this , it seems they just like to offer any or all services despite the long term . Of course best power and mpg results are always obtained with both flawed systems out . Mpg on his 136 1.7 Crdi is poor , 45 mpg the same journey in his old 2.0 tdi would of been 55 and my 1.9 tdi probably 60 . Before anything happens we are trying to find out if the low speed higher gears kangarooing requiring a downshift is a character , driver error or fault ? For instance you don't want an injector fault prior to remapping .
  13. On my travels of egr and dpf and remap info gathering I have since learnt the egr is a prerequisite of dpf regeneration . When asking a very experienced electrical automotive engineer he replied, "I can categorically tell you, that just deleting the EGR on this vehicle, will give you DPF issues in the future. The EGR is an integral part of the regeneration process on this vehicle . EGR is used during passive regeneration to help regulate the DPF temperature. Many older vehicles were absolutely fine to remove it, in fact I’ve done some due to customers insisting, some seem to be ok, and others give various regeneration errors." So the way forward for this is egr and dpf deletion and remapped for off road taxi driving only of course Obviously worry about it if it happens and have it done at your inconvenience or have it done when convenient .
  14. Come on guys this is the i40 forum.... lol. Do these 136 bhp derv motors kangaroo just coasting along at low rpm whilst in higher gears ?
  15. 1.7 CRDI . Low speed , around 1000rpm , high gears kangarooing , requiring a lower gear to be selected .