Hmmm...
I know the factory spec is to change TB no later than every 45k and WP every other TB change.. ie: 90k
I found in my service records the orig factory WP lasted 122k... until year 2000.
The second lasted 103k... until 2010 when it was still pumping.
I purchased it 4 months ago.
Has Zerex G-05 Phosphate Free
Item #28 ?? 931 106 156 00
Screw plug on:
Porsche 944 Cylinder Head Parts
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'88 8v n/a 301k with 41k on current TBelt
M454 M533 M650 M425 M418

New Feb'13 Bridgestone Grid 019.. awesome.
Paid just $1,700 running & inspected.
Big RUSH Fan! Lic Plate = LIFESON