Blowing sand environment - shorten interval?

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Originally Posted By: circuitsmith
With a gas engine 11" is a good place to change.

an additional 11" after the initial restriction reading with a new filter?
 
11" total.
I have 6 years and 38K miles on my current filter and its restriction is between 8" and 11".
I don't know what the restriction would be with a new filter, I added the gauge when the filter had ~20K; and the restriction was 8".
 
Originally Posted By: E150GT
do those restriction gauges work on any size engine? I put one on my mazda that reads up to 25" of Hg I think but it initially sets at about 8" with a new filter. Should I let it go all the way to 25"?

Yes, they work on any size engine. It reads the restriction, thats all they do. If you have a restriction with a new air filter then I'd try to find where its coming from. On my S2000 I found that the stock opening was to small from the factory.

ROD
 
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