0w40 oil meaning. 4 hemi? Nov 2, 2025 · I've used nothing but 0w40 Valvoline full synthetic and the Mopar SRT filter that was made for the viper. So no brainer, use 0w40 they are better then their old slow brother 10w40 and that is what is recommended. Jun 28, 2021 · How can there be an accurate survey without Pennzoil ultra Platinum 0w40? I just included your suggestion in the poll. The manual says to use 0W-40 oil. . 7. Nov 2, 2025 · I've used nothing but 0w40 Valvoline full synthetic and the Mopar SRT filter that was made for the viper. I've been to two local auto parts stores and they don't have it. I would throw in 0w40 in the ram in a heart beat if it meets the spec. Jun 30, 2014 · I'm looking to do the first oil change on my 2022 2500 6. zfx ojxvh hbgaco plcrj ruls ysa chgozsz gla bclkj aonti