Quote:
WEAR TESTS
While all the power testing was going on over the eight-month span of time concerned one of my dyno mules was run exclusively on JGR race oil. The engines spec changed in terms of carburetion, heads and valve train but the short block remained the same. After amassing about 800 pulls in the 4500 to 7800 rpm range and with power levels from about 400 hp to 520, the engine was used for track testing. In all it amassed the equivalent of about 900-1,000 miles. On tear down the bearings and bores were inspected. The worst bore had 1-1/2 tenths of one thousandths wear as did the worst of the Calico coated bearings. An oil analysis indicated that most of that wear took place in the first 100 or so miles.
Seen here is the wear on the worst cylinder of a test engine run in the neighborhood of 1000 miles. This amount of wear measured out at 0.00015 inches max.
A precautionary note here is that bearing clearance and the oil viscosity used to go hand in hand. Too little viscosity and too wide a bearing clearance will result in a failure sooner or later and this applies no matter whose oil you use. If you want to know the optimum oil viscosity for your engines bearing clearance go to the JGR web site.
So is this the best oil out there? Don’t know - I have not tested every contender for the #1 spot, but one thing is for sure, it is a heck of a good oil.
If you want to use this oil don’t call Joe Gibbs Racing as they are busy further developing it not selling it. Your #1 source is actually CV Products so give them a call.
SOURCES:
