![]() ![]() There are currently three types of synchronizerers:ī. The correct amount and type of friction modifier for synchronizer engagement. GL4 is minimum for most modern transmissions.ģ. The proper level of Extreme Pressure and Anti-Wear Additives to protect gearing teeth and bearings. You need to have to have the correct fluid viscosity (thickness) for proper lubrication films on the gearing and bearings, and to quiet gearing noise.Ģ. Here are three Major facts that I attempt to impress on everyone purchasing MTL's (and these comments are in at least three other threads on MT's as well):ġ. I know that for a fact since I do my research very carefully. RL's MTL is closer in viscosity to Honda's MT fluid than the factory Synchromesh. Just remember, RL's MTL is 2.5 cSt above the viscosity of the Synchromesh factory fluids. They state that the RP offers better performance and protection than what you will get with an OE fill, but yet their oil doesn't meet the specifications? Royal Purple manufactures replacement fluids that offer better performance and protection than what you will get with an OE fill.ĩ.0 100C the DC 4874464 and 7.7 100C RP Synchromax fall in the 80wt SAE gear oil viscosity classification. Royal purple is not trying to build the exact fluid as the DC4874464. Royal Purple Synchromax is what we recommend as a replacement fluid for Synchromesh or DC 4874464. If the fluid doesn't meet a viscosity spec of 9.0 C, then it's not DC 4874464 synchromesh equivalent. I would like to turn your attention to the viscosity specifications on the Product Data Specification page. I believe RP does not meet the requirements and someone has made a mistake on your website. The DC part number is for a GL-4 requirement fluid. Under the RP Synchromax you state that the fluid meets the requirements of Dodge Part Number Manual Fluid 4874464 for the Manual 6spd NV5600 transmission. I find this interesting: Here's an email I sent to Royal Purple this morning: ![]()
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