gary2014
Junior Member
i was wondering if any body used some Royal Purple Auto trans fluid in their S197 Auto Transmission
Any Mods to the car? For a bone stock car it is not really needed in my opinioni was wondering if any body used some Royal Purple Auto trans fluid in their S197 Auto Transmission
On a side not re: eng oil, I switched from oem ford motocraft 5W-20 semi synthetic (which is only 2-5% synthetic + 95-98% dino oil) to Royal Purple 5W-30 HPS. Previously, my eng catch can would end up 80% full, of what appeared to resemble a 'chocolate milk shake'..which is just unburnt fuel, oil and condensation / moisture). After the switch, the catch can barely catches anything, maybe 10-20% at most, and it pours out like new RP eng oil, no more choc shake.... go figure. Several other folks have gotten identical results to mine. A local buddy gets the RP products for me at his cost, so I just buy it in bulk, like 24 qts at a time.
Not really a fair comparison; You might get the same catch can results using Ford's Full Synthetic instead of Ford Syn-Blend as well.
On transmission fluids I would use what ever meets the Ford spec for that particular trans as they each use different friction modifiers. Read your owners manual
From owners manual "Automatic transmissions that require MERCON LV should only use MERCON LV fluid. See
Scheduled Maintenance Information
to determine the correct service interval. Use of any fluid
other than the recommended fluid may cause transmission damage."
https://www.fcsdchemicalsandlubricants.com/main/quickref/atf.pdf
https://www.fcsdchemicalsandlubrica...nsmission+Fluid&category=Transmission%20Fluid
From RP website. "Please Note:
Max ATF is NOT recommended for the following applications: Allison TES-389, DEXRON® VI, Ford Type F and MERCON® SP & LV, Honda DW-1, Hyundai SP-IV and NWS-9638, Kia SP-IV, JWS 3324, MAN 339 Z3, Mercedes Benz 236.8, 236.12, 236.14 & 236.15, Mitsubishi SP-IV and ATF J2, Nissan Matic-S, Saab 93-165-147, Shell M-1375.4 (ZF 6-Speed AT), Toyota WS (JWS 3324) and ZF TE-ML 14C. Max ATF is not recommended for use in any CVT or DCT applications."