Oil I’m coolant

[Stormy1900]

oil in my coolant 

[RDawson]

Most common cause is the water pump seal. 

[Stormy1900]

Thanks I have it apart my question is I have read about this Twinkie thing in the v of the motor part of the breather it’s a cigar shaped o-ring can anyone explain this and we’re is located 

[RDawson]

Look between the front and rear cylinders on the block. The heat exchanger/Twinkie sets there, it looks like a Twinkie earning it that moniker. There are o rings and seals that can let water/oil mix. 

[Stormy1900]

Thanks bro 

[megamile]

Oil in my coolant also; discovered 2 days ago. A lot of sludge. Ordered pump rebuild kit and seals but can find no info on twinkie including proper part name. Need seals and o-rings for it; can anyone help with name, part numbers, etc? 2011 Venture, 91,000 miles.

[RDawson]

[megamile]

Found parts; ordered used replacement. Still have to order o-rings and crush washers. Have heard that it is possible to remove without removing carbs; I hate to mess with the carb boots as I'm afraid they might be brittle and/or crack (106,000 miles) and lead to bigger more gnarly things. Also wondering if I placed new seals on water pump shaft properly... Replacing radiator, fan, possibly thermostat next week to prep for long trip Juneteenth; would like to check pump and Twinkie at the same time (I think pump will be easier with radiator out). I have to stop this oil in coolant thing before it causes anything more. Any advice is greatly appreciated; anyone in the Tampa area who might have knowledge and be willing to help would also be appreciated.