Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-21-2013, 04:02 PM   #1 (permalink)
Master EcoModder
 
Join Date: Mar 2010
Location: london, on
Posts: 339

Buggie - '01 Vw Beetle TDI Gls
Thanks: 4
Thanked 32 Times in 22 Posts
Oil heater

Was just watching a new dodge ram commercial, and apparently they heat or cool the oil to stay at 190degrees for peak efficiency. Anybody hear of this? Snake oil?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-21-2013, 04:16 PM   #2 (permalink)
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,175

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 269
Thanked 3,522 Times in 2,796 Posts
My diesel has it.
Bypassed coolant exchanges heat with the oil. It heats the oil during warm up and cools the oil when the engine is warmed up to operating temperature.

Ultralight duty gas enignes in cars and most trucks don't have this.
Its a diesel truck thing and its not a new idea.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 05-22-2013, 04:35 PM   #3 (permalink)
Master EcoModder
 
Join Date: Jul 2008
Location: Silly-Con Valley
Posts: 1,479
Thanks: 201
Thanked 262 Times in 199 Posts
You want the oil to be in the engine's proper operating temperature range. I always figured 212F was "right", since that's where the "high temp" tests are done on motor oils. Some people like 180F, I always figured that there the oil would take longer than I like to outgas the water in it, which also pointed to 212F.

A number of cars through the years (mostly ones with sporting pretensions) have had oil/coolant heat exchangers. There was an optional one on some Civics (the factory manual for the 88-91 CRX shows it) in between the oil filter and the engine block, and the Porsche 944 had a separate one. Those would warm up the oil when the engine was cold--the coolant heats up a lot faster than the oil does--and keep it at operating temp when it started to get too hot.

So yeah, a known thing.

-soD

  Reply With Quote
The Following 2 Users Say Thank You to some_other_dave For This Useful Post:
mikeyjd (05-23-2013), Ryland (05-22-2013)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com