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1973 Other Dodge Models fuel

Tiny
BRIANRMCDERMOTT
  • MEMBER
  • 1973 DODGE
  • V8
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
I have a 1973 Motorhome, that I just bought. It has a 440-1 engine in it. Do I have to use lead adatives in my gas, or is the unleaded gas going to burn up the heads and valves?

Thank you for your time.

Brian McDermott
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Thursday, January 28th, 2010 AT 7:39 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
I doubt that a 73' motorhome had a catalytic converter, but look at the exhaust for one, if non there, lead substitute might be needed. No way to know if a previous owner installed hardened valves seats.
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Thursday, January 28th, 2010 AT 8:01 PM
Tiny
BRIANRMCDERMOTT
  • MEMBER
  • 2 POSTS
After searching all day, I found a copy of the owners manual in which, "Chrysler Corporation recommends against continuous use of completely lead-free or clear gasolines. Continuous use of such fuels in normal driving could cause valve seat ware, resuling..." I am sure all previous owners never altered the engine with hardened valves seats. Thanks for the reply.
Brian McDermott


https://www.2carpros.com/forum/automotive_pictures/471802_Leaded_gas_only_1.jpg

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Friday, January 29th, 2010 AT 3:36 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Your welcome Brian.
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Friday, January 29th, 2010 AT 1:03 PM

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