RE: fuel question

78 Harley-Davidson XLCR 1000 Cafe Racer discussion forum:


RE: fuel question

RE: fuel question 
sepixlh said 2006-07-14 06:45 
 
I have used on my old -74 ironhead and now with my -78 xlcr normal unleaded pumpgas, only 98 oct instead normal 95 oct.
I haven´t face any problems... yet.
This is a clip from US Oil company website:

Passenger Cars and Light-Duty Trucks:

Based on an extensive survey of the published literature, fleet operators, engine rebuilders, and manufacturers, we conclude that all typical passenger car and light-duty truck engines (representing 94% of U.S. gasoline consumption) are safe from valve recession when operated on unleaded gasoline. They are either equipped with induction hardened valve seats or subjected to service too mild to cause problems. The problem can only occur in older engines when operating under sustained high speeds and loads.

Vintage Vehicles:

Antique cars are typically exposed to such light service that they are not expected to have any valve seat problems. In fact, they stand to benefit overall from a reduction in exhaust system corrosion and oil contamination. 
 
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