I think by Red Paint Indicator he means the color of the curve handle..
https://www.ebay.com/itm/VW-T25-Vanagon-Oil-dipstick-NOS-Part-070115611B-Genuine-NOS-/402189353976

and this one is for Syncro
https://www.vancafe.com/025115611B-p/025115611b.htm

On Mon, Aug 31, 2020 at 10:40 PM Kenneth O'Connor <kenneth.oconnor@gmail.com>
wrote:

> Hello Oliver,
>
> I think that I misinterpreted an earlier post in this group. Someone
> stated the Green is Syncro and Red is 2WD. I think they meant the handle,
> but I was thinking the dipstick itself. Mine has red paint at the bottom
> but the handle is green. That was my confusion.
>
> Thank You,
>
> Ken
> (941) 323-4710
>
>
> > On Aug 31, 2020, at 8:43 PM, OlRivrRat <OlRivrRat@comcast.net> wrote:
> >
> >         Ken
> >
> >    Where did You get the info about a Red Paint Indicator on 2WD
> DipSticks ~
> >
> > Can't recall having ever seen any Red Paint on any DipSticks ~
> >
> >                            ORR ~ DeanB
> >
> >
> >> On 31 Aug , 2020, at 6:41 PM, Kenneth O'Connor wrote:
> >>
> >> Hello Dennis,
> >>
> >> Thanks for the insight. But, that would imply that I have the Syncro
> tube
> >> and a NON-Syncro dipstick. That seems to mean that I'm overfilling the
> oil?
> >>
> >> Thank You,
> >>
> >> Ken
> >> (941) 323-4710
> >>
> >> On Mon, Aug 31, 2020 at 4:22 PM Kenneth O'Connor <
> kenneth.oconnor@gmail.com>
> >> wrote:
> >>
> >>> Hello Everyone,
> >>>
> >>> I have a 1986 SYncro that I've had for about three years. The dipstick
> has
> >>> read paint on it. This implies that it is a dipstick for a 2WD. Is
> there a
> >>> way I can be sure that it has the 2WD dipstick tube? I have enclosed a
> link
> >>> to a photo on DropBox of the dipstick pull handle looking in through
> the
> >>> license plate door. Does this look lower than expected?
> >>>
> >>>
> >>>
> >>>
> https://www.dropbox.com/s/2j0x9vud9l68ki3/Image%20from%20iOS%20%287%29.jpg?dl=0
> >>>
> >>> Thank You,
> >>>
> >>> Ken
> >>> (941) 323-4710
> >>>
> >>> On Mon, Jul 20, 2020 at 7:39 PM Dennis Haynes <d23haynes57@hotmail.com
> >
> >>> wrote:
> >>>
> >>>> The engine in a Syncro sits lower in the body. As such the dipstick
> tube
> >>>> is longer to sit higher in front of the license plate door. This also
> >>>> requires a longer dipstick for the longer tube. The support bracket
> along
> >>>> with the oil fill pipe is also different. The muffler brackets, and
> rear
> >>>> engine carrier are different also. A part of the Syncro package the
> rear
> >>>> pulley gets a sand seal assembly, bell housing gets flap check at the
> >>>> bottom between the engine and transmission, the thermostat housing was
> >>>> aluminum. The transmissions, and bel housing get tube venting to get
> above
> >>>> the water line, etc.
> >>>>
> >>>> Dennis
> >>>>
> >>>>
> >>>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for
> >>>> Windows 10
> >>>>
> >>>> From: Dan N<mailto:dn92610@GMAIL.COM>
> >>>> Sent: Monday, July 20, 2020 1:20 PM
> >>>> To: vanagon@GERRY.VANAGON.COM<mailto:vanagon@gerry.vanagon.com>
> >>>> Subject: Syncro vs 2WD dipstick
> >>>>
> >>>> hi all,
> >>>>
> >>>> Does anyone know why there's a difference between Syncro dipstick and
> 2WD
> >>>> dipstick both using 2.1 wbx engines?
> >>>>
> >>>>
> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.thesamba.com%2Fvw%2Fforum%2Falbum_page.php%3Fpic_id%3D1686306&amp;data=02%7C01%7C%7Cce372e2712814a305c9508d82cd13735%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637308624365497034&amp;sdata=5SwzYIW1scXdD%2FTo%2FmU36iTl1Kj9He13RVLvd0xyYck%3D&amp;reserved=0
> >>>>
> >>>> - Syncro dipstick is green and it has 22mm (.86")  between high and
> low
> >>>> - The 2WD dipstick is red and it has 29mm (1.14")  between high and
> low.
> >>>>
> >>>> could it be because they to want to warn the driver of low in oil
> sooner
> >>>> on
> >>>> the Syncro? or the engine in a Syncro sits differently?
> >>>>
> >>>> thanks
> >>>>
> >>>> dan
> >>>>
> >>>
> >
>