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ken-renda
04-28-2014, 01:33 PM
I recall reading, either on the forum or in Co-Operator that STP transmission fluid was recommended; is than still the case? It's for a DG 200 in a 54 Starliner. Ken, Deltavillle, Va.

warrlaw1
04-28-2014, 01:37 PM
I thought it was Dexron II or Dexron III. Not leaking out much.

rkapteyn
04-28-2014, 02:20 PM
The service book says #10 motor oil.
Experts please!

Robert Kapteyn

warrlaw1
04-28-2014, 02:38 PM
In a Detroit Gear 3 band automatic? #10 motor oil is for cooking fried crow.

rockne10
04-28-2014, 02:42 PM
10 weight oil was the best available when these transmissions were designed. Dexron-Mercon is simply the most advanced lubricant specific to automatic transmissions. I don't put bear grease on my axle bearings. I do use Dexron-Mercon in all my automatics.34451

StudeRich
04-28-2014, 02:57 PM
This is a good one: ...everything that comes in contact with the SAE 10-10W Motor Oil must be "Scrupulously" Clean! :D

(Paraphrasing a Paragraph here.)

I like that! :)

64V-K7
04-29-2014, 10:21 AM
Dexron III- Mercon was in my 55 President when purchased in 2002. It functioned perfectly for 8 years and about 18,000 miles

55 56 PREZ 4D
04-29-2014, 04:08 PM
Dexron III- Mercon was in my 55 President when purchased in 2002. It functioned perfectly for 8 years and about 18,000 miles

Dexron III - Mercon is still used in the 55 President since purchase in 2010. Still functioning perfectly with 30,000 miles of daily driving.

raprice
04-29-2014, 04:37 PM
I hate to stir things up, but I use Type F auto trans fluid in my '59 Lark. That was on the recommendation of the Cooperator session at the 2012 International Meet in South Bend. It's been working very well.
Rog

53k
04-29-2014, 06:54 PM
I hate to stir things up, but I use Type F auto trans fluid in my '59 Lark. That was on the recommendation of the Cooperator session at the 2012 International Meet in South Bend. It's been working very well.
Rog
Either will work. I believe it is thought that Type F gives crisper shifts. I have always used Dextron-Mercon in my '53 and, other than leaking a lot, has never been a problem. I also have found Dextron-Mercon a lot easier to find than Type F. Type FA is available, but I believe it is different from F. I even mixed Dextron-Mercon and Type F in my '64 Avanti when I had a bad leak and couldn't come up with F.

rockne10
04-29-2014, 11:17 PM
The consensus is either Type F or Dexron/Mercon are perfectly acceptable, depending on if you like your shift firm or not so firm (can't call either of them unnoticeable). Suffice it to say, either are modern products superior to simple 10W motor oil.