Blue70 said:I'll take 8HP for a few dollars more a quart of oil...
I've seen gains of over 10 HP by changing rearend and trans fluid too.
I dare you to find a better dollar per HP ratio!!!
Just think of all the money people spend here on parts that might give them 10 or less HP (Intakes, TB's, LT's, ect)
And it cuts down on friction and wear...How can you lose?
this is true and it makes sense.
a lot fo you guys don't realize how much better a quality synthetic like a mobil 1 or even better royal purple are at preventing power robbing and engine destroying bearing scuffing.. when the bearings scuff they actually weld toghther and break apart in a split second but it happens. if the scuffing get bad enough it will weld toghter and no break apart but will spin the bearing and when that bearing spins it's all over.
this is the oil and change interval i recomend.
reg. cars and trucks 3-4k on regular oil
stock high performance . 3k on synth blend min. or full synth recomended.
FI or high rpm high performance. 1.5 (FI high boost) 2k oil changes with royal purple.
yeah the oil changes get expensive.. but it's a lot cheaper than paying me or someother mechanic to fix your car..
there are a lot of people on this board with crackpot theorys about going 20k on oil changes. if you got the money too buy a new engine go try it out.
all engines i have diaged with bearing problems or have replaced. were not getting regular 3k oil changes. never replaced a engine that was maintained