Does anyone know what the Oil Drain Plug Thread Size is on the 3.7L engine? I am looking to install a Fram Sure Drain oil change system if I can find one that fits. Since I don't do any off-roading I don't see it as being a problem. Any thoughts on these units are welcome as well. Thanks!

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2003 Renegade 4X4 5-Speed, Bright Silver *TRADED for 2013 Wrangler*
PIAA 520 Auxiliary Lights
Garmin GPSMAP 76S
DynoMax Ultra Flow SS Muffler
Amsoil Ea "Absolute Efficiency" Air Filter
Nokian Vatiiva 235/70/R16 Tires
Pixeldzn's "RENEGADE" decals
Support the 2nd Amendment - It's your right!

Unfortunately I don't know the answer to your question, but can you tell me how this Fram oil change system works???

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2002 Jeep Liberty Renegade
3.7L V6 4x4, 5-speed manual
*Draw-tite class IV hitch
*Mopar rock rails
*Clear turn signals
*Mopar mud flaps
*Husky cargo liner
*'Trial Rated' and 'Renegade' emblems
*Bazooka 200 watt subwoofer

I found out which unit I need so I no longer need the thread size for the oil drain plug. If anyone was curious it is the SD2. Follow this link for more info on the Fam Sure Drain.

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2003 Renegade 4X4 5-Speed, Bright Silver *TRADED for 2013 Wrangler*
PIAA 520 Auxiliary Lights
Garmin GPSMAP 76S
DynoMax Ultra Flow SS Muffler
Amsoil Ea "Absolute Efficiency" Air Filter
Nokian Vatiiva 235/70/R16 Tires
Pixeldzn's "RENEGADE" decals
Support the 2nd Amendment - It's your right!

The sure drain works really well. Quick oil changes and prevents ur arm/wrist from getting burnt from the cat right next to it. The oil drains a little bit slower than normal but not slow. The only bad thing about it is that the plug cover gets really hot.

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2005 Jeep Liberty Renegade
2002 TJ Sport Solar Yellow
2000 TJ Sport Patriot Blue - gone
1979 CJ5