Every 20,000 miles isn't going to break my bank anyway. I am sure we can go round with this but I will stick with what the engineers who built the transmission tell me to use (I think we can all agree I am not smarter than they are), or my teacher. As far as getting to hot you have other things than oil that start to break down that I would be more concerned about, and besides that is what coolers are for. Synthetic fluid is much more resistant to thermal breakdown than conventional fluid, which is why it protects the transmission much better, even in normal operating temps.Ĭompanies that say don't use synthetic probably also reccommend changing the fluid very frequently.It is a matter if it needs it or not tolerances are built in and things like clutch packs are made to be used with certain fluids, kind of like a limited slip diff if you use the wrong fluid the clutches in the diff won't be able to do there job-same with the transission. Conventional fluid starts to degrade around 200 degrees, and its completely shot by around 250 degrees. The higher the fluid temp, the faster it breaks down. Heat is the number one reason that transmissions fail. Due to the design and special construction 4L60E no-leak filters are almost twice the cost of a new 4L60E OEM repalcement filter, and are best suited for a high-performance application.Its not a matter of the trans "needing" it or not. Heat is what kills automatics, so invest in.
To counteract that many manufactures have made one-peice deep filters that have virtually no housing leaks. Just use good trans fluid in the first place, such as GM Dexron VI or Mobil 1 Synthetic. The standard OEM two-piece body design allows for a percentage of transmission oil to leak through the filter housing. However, from the top side, once you get the filter removed from the vehicle, you'll be able to notice the differences in depth. These 2 filters look very similar from the bottom side. In additon to having a thicker filter medium, the deep filter also has a plastic spacer molded into the plastic portion of the filter. The difference was made up by changing the filter.ĭifferences Between Deep & Shallow 4L60E Oil Filters Due to the drop in depth of the pan, the pump intake (by way of the filter) had to reach deeper in the pan. The change in depth allowed the transmission to hold more fluid therefore allowing it to dissipate more heat. It is possible to have a 1997 with either a shallow or deep oil pan on an OEM transmission! So, it is best to inspect your oil pan before ordering the oil filter. This change was instituted to all OEM 4L60E transmissions in eary 1997. The bottom of a deep 4L60E transmission oil pan has a step down that covers 3/4 of the bottom of the pan. Shallow 4L60E oil pans are all one depth. So, how do you know which style 4L60E oil pan you have installed on your car or truck? Here's the Difference Between Shallow & Deep Pan Styles Disconnect the cooler line at the one joint near the battery where theres a hose clamp. But if youre not leaking from there, we wont worry about that, for now. You can avoid jacking the car if you can slide a pan underneath to catch the fluid. The 4L60 does have an overflow tube / vent its at the top of the case (so youd see fluid coming from elsewhere and depending on how much, it could get pretty messy.) Keep in mind that if fluid is coming from that vent, it doesnt have to be solely from overfill. Just get to a point where you can reach the hoses below. And, both styles may or may not contain drain plugs. Detailed steps: Jack up the car, EDIT - unless your car is lowered, you likely dont have to jack it up. Both shallow and deep pans installed in vehicles might be painted or unpainted. For instance, both shallow style and deep style 4L60E oil pans have 16 bolt holes. Shallow and Deep GM 4L60E transmission oil pans have a few common charactersitcs.
Shallow style and deep style 4L60E oil filters look very similar, but a casual inspection of your transmissions oil pan will let you know which filter style to order.
You may be asking yourself, "Why does it matter what type of filter my 4L60E uses? I thought they were all the same." This is an easy thing to be confused about. Does Your 4L60E Have a Deep or a Shallow Style Oil Pan?
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