Royal Purple 5W-20 1850miles - '08 150 V8 5.4L

Joined
Jul 11, 2003
Messages
174
Location
Phila., PA
this engine has a fuel dilution history - http://www.bobistheoilguy.com/forums/ubb...s__#Post2310843 oil in service for 6 months, only put 1850 miles of severe service ALL city driving, many days 5 miles or less. using same RP 5W-20 now engine (5.4L V8) only has 40K on it iron 11 copper 2 lead 0 alum 2 tin 0 nickel 0 chrom 0 titanium 0 silver 0 silicon 12 boron 14 calcium 1989 magnesium 84 phosph 753 zinc 878 barium 0 moly 8 sodium 387 potass 0 visc @ 40C 46.1 visc @ 100C 8.2 visc index 153 base # 5.91 acid # .98 oxidation 12 nitration 9 antiwear 12 sulfation 17 glycol 0 soot 0 water ppm 340 fuel dilution 1.2 only driving approx. 5K/yr now would like to go the full year on synthetics..... opinions ?? .....thanks
 
Last edited:

phillyFX4

Thread starter
Joined
Jul 11, 2003
Messages
174
Location
Phila., PA
I forgot to mention I added a half quart(same RP) make up oil about 3 weeks before deciding to change it for the winter. thanks
 
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