From: shinnokxz@gmail.com   
      
   On Sunday, March 11, 2018 at 11:38:53 AM UTC-6, Adrian Tuddenham wrote:   
   > When I first got my Toyota Hiace with a D4D turbo diesel, I was amazed   
   > to find that the oil dipstick didn't work.  No matter how I tried to use   
   > it, the 'business end' always came out smeared with oil and completely   
   > unreadable.   
   >   
   > Several online discussions mentioned this problem, with users strongly   
   > divided into two camps: those who had nothing but trouble and those who   
   > had none.  There didn't seemto be any obviously-identifiable factor   
   > causing the problem, but someone mentioned that he had found twisting   
   > the bottom two inches of the dipstick strip slightly gave a partial   
   > cure.   
   >   
   > I tried this on my vehicle, the degree of twist being a compromise that   
   > still allowed the strip to flex around the bends of the guide tube   
   > without getting jammed edgewise-on.  To my surprise, it worked and the   
   > dipstick is now sufficiently smear-free to be readable.   
   >   
   > The probable cause of the divide between working and non-working   
   > dipsticks then dawned on me:  The guide tube on a non-turbo D4D is   
   > fairly straight; whereas, on the turbo engine fitted in the Hiace van,   
   > it has an 'S' bend to negotiate around the turbo unit.  In flexing   
   > around the bends, the dipstick slides against the walls of the tube and   
   > the oil mark is smeared.   
   >   
   > It would be interesting to test this theory by asking members of this   
   > group with D4D engines to say whether they have experienced dipstick   
   > problems and whether these were with turbo or non-turbo versions fitted   
   > to the Hiace van.   
   >   
   > --   
   > ~ Adrian Tuddenham ~   
   > (Remove the ".invalid"s and add ".co.uk" to reply)   
   > www.poppyrecords.co.uk   
      
   sounds like a funny engineering problem   
      
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