Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
NewsW wrote:
VW filters... do they have a water block membrane?
GM?
Ford?
Need some help here from our peanut gallery!
Probably the silence is caused by nobody being "sure" of the facts.
GM has used basically the same screw on (single) filter body since 2001. But the internals have been upgraded numerous times. The consensous opinion is that the GM is now a 2 micron filter.
What is fact is that it is made by RACOR and contains their exclusive "aquablock" membrane. GM is very proud of it's water blocking abilities....Though I do think water can get thru under the right circumstances. The latest GM filter is backwards compatible with all previous years Duramaxes.
Ford,,,until 2011 used a similar Racor filter with the aquablock.
But now uses a 2 filter setup. A primary which most say is 10 micron and a secondary which most say is 4 micron. One person says it has a water block membrane. Most everyone else agrees that it does not. The pics that I have seen of a cut open one did not have one visible..So IMO it does not.
I am puzzled by the fact that Ford with 2 seperate filters is said to be inferior (by most) to the GMs single filter.
The Ford seems to have no water block, filters to 4 micron vs GM's 2 micron,,and needs filter changes more often.
Excactly the opposite of what I would expect.
