Hi. My 1st post here. I was with Chrysler service departments for over 30 years (since 1977) and still try to keep up with all the changes in the business. If you are out of the automotive service business for longer than 6 months, you fall behind. So much is constantly changing and the trends and benchmarks will keep rapid change a staple of the vehicle service industry.
I am looking for more information about Chrysler's ATF+4. I know that multiple lube providers are licensed to use the name ATF+4, but is it really ATF+4?:https://www.centerforqa.com/chrysler-brands/
I recently used the Castrol Transmax ATF+4 in my sister's Liberty with the 42RLE transmission. The Transmax doesn't have the machine oil odor that I have come to expect from ATF+4 and it seemed much thinner than the real ATF+4 that I was used to. It also claims to be a 'Full synthetic', which Mopar ATF+4 is not. It is a semi-synthetic 'blend'.
Within a day, we noticed a shudder going into torque converter lockup that it never had before. I immediately drained the Castrol and replaced it with the Walmart SuperTech ATF+4 and the shudder went away almost immediately.
The Transmax ATF+4 bottle label and Product Data sheet has no mention of the product meeting Chrysler's (Material Standard) MS-9602:
I had thought that meeting that material standard would be required in order to call yourself ATF+4. The Walmart SuperTech does mention that it meets MS-9602, is back-compatible with legacy MS-7176 and has the odor and feel of genuine Mopar ATF+4:https://www.allpar.com/fix/trans.html
I then did some research and even contacted Castrol/BP brands. They said that their product was licensed as ATF+4. I then asked them if they could provide me with a document that states that the Transmax ATF+4 meets MS-9602 and they have not responded.
If my sister had continued to drive with the lockup shudder, I'm sure that clutch damage would have occurred. Anyone have experience or input with this?