⚙️ Shift Smooth, Drive Confident – Never Miss a Gear!
Hapco Slick Shift is a powerful 16 oz. transmission additive designed to eliminate slip, chatter, and hesitation by removing gum and varnish buildup. Compatible with all transmission types and fluids, it lubricates and protects friction surfaces to restore smooth shifting and acceleration, ensuring your vehicle performs like new.
Manufacturer | Hapco Products Co. |
Brand | Hapco |
Is Discontinued By Manufacturer | No |
Manufacturer Part Number | 800 |
C**R
This stuff works!
I have a 2002 Subaru Outback H6 with a 4eat, and when I bought it there was an issue with the transmission slipping when cold. Mostly when going from a standstill, and hard shifts as well.I did a drain/fill on the transmission, and first added this Slickshift and then completed the fill procedure with high quality ATF.The slipping issue is completely gone now, done about 1k miles on it and it runs great now! Sometimes it still has some hard shifting, but nothing too bad for a car with 240k!
I**L
Saves a Lot compared to mechanic doing the work
Not perfect- BUT Good
E**N
This product does what it says it will do!
I was having serious issues with transmission performance. It was lunging and jerking and making a terrible rattling noise. My mechanic told me to get some Slick Shift. He had put some in his wife’s car and it made a tremendous difference. So I did the same. My car is 13 yrs old and I was nothing short of amazed!!!! It runs like it did the day I bought it! I highly recommend Slick Shift!
B**O
If you shift slips, this can help!
I bought a 928 that had slippage in the shifting. We took Some of the old transmission Fluid out and added the slick shift. Drove it around the block and now it doesn’t slip. Amazing! Most transmission shops didn’t want to touch my car. This product made a difference! Thank you.
H**.
Does just like it saids happy customer.
This product works so great my transmission shift really great since I used this.
M**L
Helped fixed my shifting issue
Easy to install and seems to fix my slipping issue when shifting
R**B
I had my Doubts
I had my doubt this would workAfter I put it in, it was a matter of a few miles that I noticed how the transmission not only shifted better but was much quieterHope it lasts
Trustpilot
1 day ago
1 month ago