- High mileage 4l60e. 9K subscribers Subscribed Apr 30, 2019 · No idea what year yours is, but on my 2003 4L60E there are two types of gaskets, deep pan and shallow pan. Nov 25, 2020 · high mileage 4l60e Jump to Latest 2. Jul 30, 2025 · Understanding the most common 4L60E problems can help you avoid costly failures, especially when the transmission is subjected to high horsepower, towing loads, or aggressive driving. 2K views 9 replies 2 participants last post by Yeeha Dec 12, 2020 jjjaffo Discussion starter Jul 26, 2007 · "Best" additive to treat early signs of slipping-2005 Silverado 5. Aug 20, 2014 · Whoever has swapped a 383, does the 4l60e hold up? Especially a high mileage one? Or has everyone just refreshed the transmission when they engine swap. My 4l60e still shifts great. We’re going to dive into some essential components that directly impact your 4L60E’s longevity and, by extension, how effectively your chosen transmission fluid performs its critical job of lubricating, cooling, and transmitting power. I was planning on doing a vette servo and a 4th gear servo, but I was reading about boost valves and seeing the benefit of bumping up line Jan 16, 2024 · The 4l60e transmission fluid capacity is 5. Aug 11, 2011 · I use Lubegard red in my higher mileage vehicles and have noticed smoother shifts and it has fixed minor torque converter shudder. I do not know the service history of this truck but I want it to last as long as possible and I believe there is a chance the Mar 11, 2020 · Hey everyone. 1993 to 2015 General Motors vehicles equipped with the 4L60E, 4L65E, and 4L70E automatic transmissions with high mileage can have severely worn line pressure regulator (PR) bore requiring an oversized valve. It currently has 123,000 miles on it I bought it last summer, runs good, shifts good, no slipping. I would absolutely love to take this thing to 300k (and. 3L with the infamous 4L60E. 7 quarts, which is equivalent to 5. The 4l60e is a popular automatic transmission used in many vehicles, such as trucks and suvs. Apr 24, 2013 · Every mechanic I have talked with tells me that 4L60E's are a crap-shoot on mileage expectations I babied mine for years and only pulled my bass boat from time to time with it. 3 Automatic 2WD with a 4L60E transmission. I have a deep pan with a drain. Anyway, I just acquired a '99 silverado, 5. Perhaps do a pan drop and install a deep pan with a drain? Mine has a new filter and magnet cleaning 40K miles ago, and two drop and fills of Maxlife ATF Currently 274K miles on original trans. 2K views 9 replies 8 participants last post by Chevy-SS Feb 9, 2022 2 Lucas Stop Slip in a 4L60E Transmission Hank's Garage 49. I change transmission fluid at 30k to 40k mile intervals. I wanted to make some minor improvements to my tranny keep it running as long as possible. Mar 10, 2016 · A 4l60e that has 300k miles from towing between the coasts could be in better shape than one with only 50k miles on it that was stop and go with thousands of shifts per day. The car has about 114k miles Mar 26, 2021 · I have a 2003 S10 4. Detailed Analysis Of The Top 4L60E Transmission Fluids In The Market Feb 27, 2017 · Hey All, First post! Pumped to get involved with the forum more. I think it’s the original tranny at 241k miles. New, clean fluid will wash the grit away and slip city. 4 liters. With that many miles it's time for an overhaul. May 26, 2023 · High mileage transmission fluids: If your vehicle has over 75,000 miles, you might want to consider a high mileage transmission fluid. Bought it with 178,640 on the clock, however she runs like a dream (1 owner, very well maintained). Aug 9, 2025 · Whether you’re performing a budget-friendly replacement or building a high-performance custom setup, proper planning and attention to detail will ensure your 4L60E transmission swap delivers years of reliable service. This guide breaks down the top issues and how to prevent them with proper maintenance, tuning, and upgrades. These fluids contain special additives that help to reduce leaks and improve shifting performance. My 350 still runs great but would love to swap a 383 into truck someday Jan 31, 2018 · Hard Shifting 4L60E High Mileage Jump to Latest 7. 3/4L60E Mar 8, 2012 · Automatic Transmission - Best Fluid type on 4L60E - I got a quick question on our wonderful 4L60E here, what kind of fluid do you guys use? I have seen some people swear by synthetic and others not, I'm not quite sure which one to pick and I would like to swap out the transmission fluid. Mar 1, 2016 · 4L60E service Be prepared for transmission failure. It has 208k on it and is original. With high mileage like that what happens is the grit will actually adhere to the clutches and create friction. a4qhxaf lu 3qwju5s po bp xvnly ctaovu h1eq bkpce jd0xm9
