Well the Lucas worked in my 2001 Silverado for over 2 years now -- had some slippage but after the thick Lucas transmission additive it has never slipped since. Put the bottle in super hot water to help it come out before pouring it into your transmission. Best $12 I've spent.
Lucus trans fix
- Thread starter tblt44
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OVERKILL
$100 Site Donor 2021
I expect member @clinebarger could have provided you with some advice on what needed to be fixed in that transmission that is presently being bandaid'd with higher viscosity (increasing pressure).
If it slips worse when cold (when the fluid is thicker) and gets better when warmed up (when the fluid is thinner), how is putting a super thick fluid supposed to help?
OVERKILL
$100 Site Donor 2021
Oh, and since it was mentioned, I went and took a look at the SDS sheets for both Trans Fix and LOS.
While we know that LOS is formulated using an inexpensive hydrotreated bright stock base (Group II), Trans Fix is formulated using an even cheaper solvent-refined heavy naphthentic base (Group I).
Both would require absolutely obscene amounts of VII polymer added to them to reach their target viscosity (LOS clearly more, given its higher visc), but I'm surprised that they used an even cheaper base oil for the Trans Fix product, it must cost absolutely nothing to blend.
While we know that LOS is formulated using an inexpensive hydrotreated bright stock base (Group II), Trans Fix is formulated using an even cheaper solvent-refined heavy naphthentic base (Group I).
Both would require absolutely obscene amounts of VII polymer added to them to reach their target viscosity (LOS clearly more, given its higher visc), but I'm surprised that they used an even cheaper base oil for the Trans Fix product, it must cost absolutely nothing to blend.
Thus^
$12 is chump change for a potential fix that makes the trans last another year or two. Besides, it's fun to explore the available products!
The only catch is that you are obligated to report back with pos/neg/null effects.
I've never had a fluid filter change help a transmission having problems. Trans X has helped many times for several thousand miles.
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I "fixed" an old beater car with an issue like that by adding 1 bottle of Lucas Transmission Fix (the thick stuff), and 1 tube of Lubegard Dr. Tranny Fixx.
It worked great for me. Your mileage may vary.
AutoMechanic
Site Donor 2024
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Yes, for me, I tried 1 bottle of Lucas first, which didn't fix my issue. I then added 1 tube of Lubegard Dr. Tranny Fix to that.... That combination worked! I guess the Lucas thickened it up, and the Dr. Tranny worked its magic to as well.
Beat throwing $3000 at an old car. Minivan driving fine 1 year later.
Beat throwing $3000 at an old car. Minivan driving fine 1 year later.
AutoMechanic
Site Donor 2024
Yes that stuff is great I used it alone in my van in a few miles or less it worked and it worked great. I know a transmission guy and he swore by it so I fully trust it.
Why do you have to work hard to be civil? You told me you thought the two products were actually the same. I showed from the SDS they are different products. Talking about oil stabilizer in a post about transmission fix is a complete red herring. So irrelevant to thread and it is anybody’s guess why you still keep harping on it. They are two different products regardless of your suggestion to the contrary.
OVERKILL
$100 Site Donor 2021
No, you claimed they were two completely different products, I simply questioned whether that was truly the case based on what they do:
OVERKILL said:
Ultimately, they both just massively increase viscosity via the mechanism of a huge dose of VII added to a very cheap base oil. The SDS sheets simply show that the Trans Fix product uses an even cheaper base oil and isn't quite as heavy.
I tried it years ago in an old pickup that wasn't going into gear. The thickness provided enough hydraulic pressure to get it moving. And lasted 6 months until I traded the truck in for something else.
You're getting clues. What fluid does it use? A DEX Merc? Like dex VI? Then you could try Valvoline maxlife AKA multi-vehicle. I've been using it in the Escalade that calls for Dex vi. It's thin and performs really well in the cold. Readily available at Walmart. You can try blending a few quarts to thin it out. See what happens.
Did you change the filter? It probably wont help but I had a GM TH350 that would not move when cold and did a fluid and filter (a rock catcher at that) as a hail Mary and it went right into gear and drove fine and did so for years after,
I had a similar experience with a 66 Ford Falcon that hadn't had a transmission service ever. I got it with a little over 100K miles and had the same issue. A pan drop and filter replace did the trick until the car was totaled while parked when I was working.
