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Old 10-08-2021, 02:00 AM   #230 (permalink)
Isaac Zachary
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
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Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
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Quote:
Originally Posted by oil pan 4 View Post
Seems only common in theory, all but non existent in practice.
In some special applications if might. But generally these kinds of things have been mostly abandoned for the spark ignited engine fire to it causing the same emissions problems found in diesel engines.
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