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Old December 23rd, 2017, 09:54   #28
diesel steve
Veteran Member
Join Date: Mar 2009
Location: southfield,MI
TDI(s): 1996 b4v
Fuel Economy: 50 mpg city/highway

A lot of interesting comments about filters. No one mentioned the Hastings LF517 or Fleetguard LF3451 or Donaldson P557780. I use to use the Purolator filter but have read some things that it used to be a good filter but it is made different now and not recommended. I have read that there are only a few factories that make filters and brands like Amsoil,Royal Purple and Mobil 1 are made by other companies to their specs. 100% synthetic are supposed to be the best for extended oil change intervals but there are very few filters made for this application that are. I change my oil every 10,000 miles and use the Rotela 5w-40 synthetic. I have not heard about the Hengst or Mahle brands. A lot of comments about these two brands and many seem to recommend them. What about the brands I have mentioned?
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