[wizzard]

yep this has ben a problem for some time now, gets to be hard on cam shafts (learnd the hard way) every engine we biuld here gets run in on this
http://www.joegibbsracingoil.com/produc ... index.html then they all get switched over to royal purple 10w/30 for the gas engines and the deisels get switched to amsoil 15w-40

 

[wizzard]

lucas is great for gear box's but im not so shure about engines. from personal experience i notced that in engines with hydralic lifters the oil with lucas doesnt get to the top of the motor quik enuff, therefore causing rocker arm chatter at high rpms. solid lifter engines havent noticed any difference other then hard to crank over when its freezing out