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Royal Purple Filter Mileage Rating #5165857 07/19/19 09:53 PM
Joined: Apr 2013
Posts: 1,041
JerryBob Offline OP
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I can't find much info online about how long you can run a RP filter. Anyone have an opinion or knowledge on whether they can go as long as a Fram or Mobil-1, mileage-wise?

I know they're great filters, but if the amount of media is on the small side, I suppose the mileage could be on the small side.

Re: Royal Purple Filter Mileage Rating [Re: JerryBob] #5165869 07/19/19 10:05 PM
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4WD Offline
Joined: Sep 2010
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I’m using the RP 20-500 which is mid sized like and XG10575, FL500 s, or PF63

Re: Royal Purple Filter Mileage Rating [Re: JerryBob] #5165963 07/20/19 01:59 AM
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Linctex Offline
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It's the same exact filter as Amsoil and Donaldson when cut apart and compared side-by-side.

I've ran a plain Motorcraft FL-1A to 30,000 miles back in the middle 1990's (with regular oil changes) and had no failures (filter looked great).

Today's engines run even cleaner yet.

"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Royal Purple Filter Mileage Rating [Re: Linctex] #5166512 07/20/19 05:29 PM
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Garak Online Content
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I've mentioned it before, but I remember back in mid 1980s, the FL-1A was advertised as the long life alternative to the originally specified CFL-1. wink

Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
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