Quote:
Originally posted by acme
The sludge problem was with a faulty PVC system design on older Toyotas. The crankcase wasn't venting correctly and the vapor didn't have a place to go except lining your heads and valve covers and inside your block  , it just turned to a soild , sludge......
Alan
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If the positive crankcase ventilation system wasn't working properly the crankcase pressure would build up and cause oil leaks.
There is no way I would risk running such an expensive engine like the I-force V8 for 25,000 miles on the same six quarts of oil. I'll stick with the 7500 mile interval that Toyota recommends regardless of what the oil manufacturers say. I may be ignorant in saying that but then I don't put the synthetic oil in to get extended oil intervals. I do it for the reasons I stated above.
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stock exhaust
Formerly Modified JBA headers now SSautochrome headers temporarily
TRD LSD
Extang lift off tonneau
Hankook DynaPro AS RH03
stock air filter & box
220 HP @ 4800 RPM
302 TQ @ 3400 RPM Run With Spintech Sportsman XL muffler, stock air filter, and JBA headers
208 HP @ 4800 RPM
285 TQ @ 3400 RPM Run With Spintech Sportsman XL muffler, TRD air filter, and stock manifolds
204 HP @ 4800 RPM
271 TQ @ 3400 RPM Bone stock
Quarter mile 15.526 @ 87.17 mph bone stock in 40-degree weather 2WD SR5 V8.
Quarter mile 15.389 @ 88.66 mph modified in 60-degree weather 2WD SR5 V8.
0-60 IN 6.88 seconds on G-tech
Dyno run results click
here