Where does this 'recommendation' come from exactly?This Type-F ATF is recommended for all the old Ford, Edsel, Mercury, and Lincoln automatic transmission for the 50s & 60s cars and some late 60s earl 70s cars. The Ford C6 transmission designed in the mid to late 60s was the first to use clutch plates that they required a new type ATF.
Dumb question but can you mix the two to get some properties of both?
Automatic transmissions ran smoothly and reliably using whale oil in lubricating fluids, as long as engine coolant temperatures ran below 173 degrees F. Fortunately for the whales, by the 1970s engines became subject to tighter emissions regulations and engineers had to design them to run hotter. Other demands such as front-wheel-drive and ever-increased emissions limits boosted the operating temperatures of engines to well over 200 degrees F, forcing research efforts into synthetic lubricants and rendering the use of whale oil (really an esther, not an oil) obsolete.
The Endangered Species Act of 1972, followed by an "indefinite moratorium" set in 1986 protects those whales remaining. Only the Japanese and Norwegians still kill whales for meat. While our society now looks at this senseless killing as; well, senseless and selfish, think of how you might have felt about driving a 50s or 60s-era car with an automatic transmission or locking differential if you had known that large numbers of whales had to die for your convenience. It isn't a pretty story, is it?
INFO SOURCE - https://www.straightdope.com/21344087/do-the-japanese-lubricate-new-cars-with-whale-oilSo what was the result? At least 5,500 automatic transmissions failed prematurely in cars built between 1973 and 1975. Corroding solder joints in the transmission cooling system allowed antifreeze and transmission fluid to mix, with unfortunate results. In news stories at the time, General Motors, maker of the cars with the defective trannies, blamed the problem on the lack of whale oil. The implication: it wasn’t the fault of GM, but rather those meddlesome conservationists.
If you read the news accounts carefully, however, you notice that it wasn’t GM automatic transmissions across the board that failed, but rather two specific types, the Turbo Hydra-matic 350 and 400 series gearboxes. The bad transmissions accounted for one-sixth of one percent of these units installed in GM vehicles at the time. We scoured the technical literature and the frequency-of-repair survey results in Consumer Reports for signs of an industry wide spike in automatic transmission failures in the mid-1970s. Nothing.
From this we deduce that while the absence of whale oil perhaps didn’t help, the real issue was a defect in GM’s transmission design. Be that as it may, GM reformulated the solder and switched transmission fluids, and the problem went away.
Unless the container label has MEETING FORD SPEC ESW-M2C33-F, it is a crap-shoot as to whether a product is as claimed. Same with the DEXRON-MERCON applications.The fine print says it "meets Type F specifications"
Not a dumb question. The only dumb question was my asking my little thumbscrew to marry me.
There would be no reason to mix, actually they would have to be blended together. It's simple. If you have an older trans that had a call out for TYPE-A and its successors, MERCON V is the latest formulation. If you have a trans that calls for TYPE-F, you can only use TYPE-F unless the trans was rebuilt with different friction materials.
If you have a DEXRON/MERCON trans that you want firmer shifts, you would flush and fill with TYPE-F.
I guess i'm asking for those of us who might be lazy and/or hypothesis development. What if I didn't want to drain my converter (leaving quarts of a different type in the system)?
What if I wanted slighter firmer shifts without going full Type-F firm. What if I don't know what's in my car and start topping off with the type I want if its a bit low on fluid? Etc etc.
It's evident on this forum that plenty of people are using Dexron OR Type F and no-one seems to have any troubles with either.
So scientifically, is there any reason why blending them is not a possibility? I would assume that blending different types would be like blending water and alcohol, 100% miscible. The primary constituent being the one that governs primary friction modifier behavior.
OR are they immiscible or do they somehow react with each other leading to disastrous results?
I guess i'm asking for those of us who might be lazy and/or hypothesis development. What if I didn't want to drain my converter (leaving quarts of a different type in the system)?
What if I wanted slighter firmer shifts without going full Type-F firm. What if I don't know what's in my car and start topping off with the type I want if its a bit low on fluid? Etc etc.
It's evident on this forum that plenty of people are using Dexron OR Type F and no-one seems to have any troubles with either.
So scientifically, is there any reason why blending them is not a possibility? I would assume that blending different types would be like blending water and alcohol, 100% miscible. The primary constituent being the one that governs primary friction modifier behavior.
OR are they immiscible or do they somehow react with each other leading to disastrous results?
I guess i'm asking for those of us who might be lazy and/or hypothesis development. What if I didn't want to drain my converter (leaving quarts of a different type in the system)? What if I wanted slighter firmer shifts without going full Type-F firm. What if I don't know what's in my car and start topping off with the type I want if its a bit low on fluid? Etc etc.
It's evident on this forum that plenty of people are using Dexron OR Type F and no-one seems to have any troubles with either.
So scientifically, is there any reason why blending them is not a possibility? I would assume that blending different types would be like blending water and alcohol, 100% miscible. The primary constituent being the one that governs primary friction modifier behavior.
OR are they immiscible or do they somehow react with each other leading to disastrous results?
Trick Shift was originally developed by B&M for racing applications.
It's become so successful that it's the most popular high performance fluid on the street also! Not an additive, this is the best performance ATF available! A scientific blend of foam inhibitors, pressure agents and shift modifiers that will provide extended transmission life and drastically improved shift feel.
Trick Shift is the easiest way to measurably improve the transmission performance of your vehicle. Trick Shift works with all automatic transmissions when a firmer shift is desired. Pour in Performance is not just a catchy phrase - it's reality! It can be mixed with stock-type transmission fluids, however to attain maximum improvement you should use Trick Shift exclusively.
Ideal for towing, light trucks and RV applications as well as racing. Not recommended for electronic controlled transmissions.