Originally Posted By: WillB
Why does Rotella T6 cost less than other Synthetics? Is it a true Group 3/4 synthetic? Is it a bad option, whether gas or diesel?
A few reasons, actually, why it's less expensive:
1) T6 is a grp III and not PAO, so the base-stock costs less. This is the same reason that Mobil now has their "Super" series of syn, versus the M1 series of syns; the "Super" syn also costs less than the Mobil 1 PAOs. Also, please note that Pennzoil, Castrol and even Amsoil have the same options. They all have a group III and group IV offering. So, because T6 is group III and not PAO, it's going to cost less than the other main competitors like Delvac 1, TDT, Amsoil HDD and DEO, etc. But, if I understand correctly, the Valvoline VPBE and Delo group III products are starting to become more cost competitive now.
2) Marketing. T6 is widely marketed, and sales volume can justify better "per gallon" pricing, especially when you see it mass-marketed at W/M. It's the same reason I see M1 0w-40 for $9/qrt retail at my local AZ store, but that very same M1 0w-40 product is only $6.50/qrt at my local WallyWorld. Volume of sales and marketing bulk purchase contracts. But again, competitors like VPBE and Delo syn are coming into their own, market wise. Those two were rare as hen's teeth a few years ago, but I have seen them out there on the shelves recently. It makes sense when you think about it; the T6 was all alone in the mass market, and now the market sees an opportunity to compete!
OK - enough of the economics lesson ...
The reality is that any fluid, any lube, any product under the sun, can be a good or bad investment, depending upon how you use it. You can over or under utilize any product.
If you use the T6 in conditions where it will succeed, and use it long enough to get your ROI, then it's an EXCELLENT product. T6 is neither superior nor inferior sitting on the shelf; it's a matter of how you use it, that determins how "good" it is for any specific situation. But in general, it is a very capable product that is very aggressively marketed, so it deserves the good reputation is has earned.