1991 Cadillac Deville Premium to Regular gas

Tiny
QUAQUAJACK
  • MEMBER
  • 1991 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 76,000 MILES
Can I do something to the motor or put in a additive to convert a premium burning engine to regular gas?
Sunday, December 9th, 2007 AT 8:26 PM

1 Reply

Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
You can run reg unlead but it may cause it not to run as smooth, and power will be affected
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Monday, December 10th, 2007 AT 12:27 PM

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