RobY

So far holding up great... no degradation in performance since change. Probably around 10k on it so far...

Good stuff. Still as smooth as ever...

full syn only comes in 75w-140

Grey Bottle 75w-90 Semi syn

UPDATE: Works GREAT when it is 100 degrees out. Shifts are very consistent. Little to no degradation in performance even with extended mixed driving. At the 2k mile mark.

05' less obese...

So far I'm finding that this stuff is excellent. Quite possibly significantly better than the factory fill. 1000 miles into it. No signs of degradation in shift quality. Gears go in like butter even REVERSE Will change the rear diff oil in future if all goes well possibly with 75w-140 full synthetic.

Not sure about cold shifts it hasent been too cold here in the last 3 weeks. But in the morning around 50 degrees F without any warmup, all my gears go in like butter.

Unfortunately they only sell it in inconvenient 1 quart and 5 quart containers.

After reading that wally world actually sources thier store brand stuff from some very reputible suppliers I have decided to give their gear oil a shot. Basicly Wally world motor oil is made by mobil and it is thier GRIII synthetic. Supertech Oil fileters are made by champion labs and are basicly identical to Mobil 1 and K&N filters at a fraction of the cost. Ect... The subaru extra-s that came with the car was pretty good but got stiff in colder weather. It was sometimes difficult to shift into 1st gear. But overall a very good oil. My tranny was dropped recently (not too long ago) for a clutch change at a subaru dealership and they put in some new oil so the oil wasent too old when I switched over providing a better basis for comparison. Im using Wally World brand 75w-90 GL5 Supertech Semi Synthetic Gear oil now. Walmart's source is actually Warren Distribution the manufacturers of MAG1 synthetic lubricants. The Spec is GL-5 and is also recommended for MT-1; MACK GO-J and SAE J2360 specifications. The most telling is the MACK GO-J specification as it is the only specification that qualifies a mack truck transmission to qualify for an extended drain intervals. A mack GO-J specified oil is tested to exceed a baseline of antispalling, anticorrosion, and antiwear characteristics in a Mack T-200 series transmission with engine loads exceeding 1500ft/lbs of torque in heavy haul conditions. This is a difficult specification to meet and MACK keeps a VERY short list (4 pages) of approved GO-J approved lubricants. Surprisingly NONE of the deemed "high performance 15 dollar a bottle, 5 percent increase in horsepower!, passed our own arbitrary test, some guy online said it was the bomb! oils" are on it. Here are some of the criteria. Mack Power Divider Snap Procedure Specifications: This procedure covers the Mack GO-J. Objective The objective is to evaluate the wear protection of a gear lubricant. Procedure fixture Mack truck tractor and trailer loaded to 98,000 lbs. are required to perform this procedure. Procedure parameters The Mack truck tractor and trailer are driven in a 100-foot diameter circle for 500 laps. Abnormal noise ("snapping", "popping", etc.) is noted and cams and wedges of power divider are rated for wear and distress. Procedure parts evaluated The cams and wedges are evaluated. Pass/fail criteria No "significant" distress present on parts and no "abnormal" noise during testing are the pass/fail criteria. High-Temperature Cyclic Durability Procedure (ASTM D5579) Specifications This procedure covers Mack GO-G, GO-H, GO-J, Objective The objective is to evaluate the thermal stability of gear oils by determining number of cycles to unsynchronized shift. Procedure fixture Mack synchronizer with new friction and reaction disks, oil heater, Mack T-2180 transmission, and electric motor are required to perform this procedure. Procedure parameters The high-low range synchronizer of a Mack T-2180 18-speed transmission is shifted through a 12-second cycle (6 seconds in low range, 6 seconds in high range) until an unsynchronized shift occurs. The shift pressure is held at 90 psi, the procedure lubricant temperature is controlled at 250°F, and the tail shaft speed is held at 750 rpm throughout the procedure. The countershafts speed ranges from 459 rpm to 1756 rpm during the shift. Procedure parts evaluated The clutch disks, shifter fork, and synchronizer ring are evaluated. Pass/fail criteria Number of cycles to failure greater than the average of the last five passing reference oil results is the pass/fail criterion. So far so good. It actually felt better than the factory fill. Its pretty cheap too. If you don't like it you can always drain it out 4 qts cost me under 20 bucks. Shifts are smooth. Actually a bit smoother than the extra-s. First gear is now slightly easier to shift into. There is less syncro "noise" (sometimes you can hear the syncros wind up when shifting from gear to gear). And overall shift effort has improved. I will keep you up to date as to the longetivity of the oil. Its had limited use on NASIOC but those that have tried it love it. Could be an un-found diamond in the rough and a viable alternative.

Walmart filters are made by champion... Quality stuff at low prices...

No but if im gonna buy an oil filter I might as well buy somthing not crappily made. The filter media packed in a comprable sized filter is half of what its competitors use. The bypass valve is so lightly sprung in a fram filter it would not surprise me if ALL the oil was bypassed. Compare the bypass spring and diaphram on a Toyoko Roko (OEM) Filter to a fram filter. The fram filter coil is about the diameter of a small paperclip. More info... http://www.tobycreek.org/oil_filters/fram.shtml http://mymiata.paladinmicro.com/MiataOFilters.htm#FramPureAA

would not even bother. Its redundant. If the main oil filter does its job this is completely unnecessary.

Ooh I wouldent go with Fram... Fram is pretty much synonymous with the crap that floats off the crap in the bottom of the toilet and sticks to the rim of the toilet bowl. http://minimopar.knizefamily.net/oilfilterstudy.html http://people.msoe.edu/~yoderw/oilfilterstudy/oilfilterstudy.html#fram-ph8a http://minimopar.knizefamily.net/oilfilter-fram1.txt