This stuff I think prolongs the longivity of your transfluid and Ive been using slick 50 for many of years never harmed the car...  Read More

This stuff I think prolongs the longivity of your transfluid and Ive been using slick 50 for many of years never harmed the car but has benefits to using in conjunction with your atf fluid.  Read Less

I have driven the car for 3 months now and the transmission shudder that occured when I had been driving for long periods of ti...  Read More

I have driven the car for 3 months now and the transmission shudder that occured when I had been driving for long periods of time like 3-4 hours has not returned even in desert weather. Nissan Altima 2.5 L  Read Less

I added Slick 50 oil treatment at my last oil change (2001 Suburban 1500, 217k miles), and the difference in performance was so...  Read More

I added Slick 50 oil treatment at my last oil change (2001 Suburban 1500, 217k miles), and the difference in performance was so good (immediately quieted noisy valve lifters, noticeably smoother idling/running), I'll now be adding it with every oil change. So when I decided to DIY a trans fluid change (with removal of bottom pan and change of internal filter), I figured I'd give their transmission product a try as well.This trans (GM 4L60E) has always been a very solid performer, but the shift from 1st to 2nd gear is a little on the hard side ... I've adjusted for it over the years by just backing off the gas a little as the engine reaches shift RPM for that gear. After I put this stuff in, the transition from 1st to 2nd got noticeably smoother, without me having to do my little easing off the gas trick. I wouldn't call it some kind of miracle ... just a good product that gives older engines/transmissions a little help ... well worth the minor cost it adds to your oil and trans fluid changes.  Read Less