I have the 6.4 liter Hemi in my Charger, and I switched from Ultra Platinum to Redline. My car uses 0w 40, but nonetheless, I have not seen or felt any difference between the 2. If you are worried about switching, I can assure you that Redline is a very high quality oil.
Reviews of RED LINE parts For Business
USA
I am running Redline 0w-30 during the warmer months. It was the most reasonably priced group 5 ester base (with great reviews) that I could find. Oil temps during my last autoX event were down 15 degrees F, compared to a similar day with the factory recommended 0w-20.
My 07 Passat has 236k. I change oil every 5k, cam follower every 70-100k (20k is serious overkill), lots of coil pack changes (like 4 or 5), and that is about it.
Redline 5w-30 with an OEM filter. No issues and smoother start up.
I used redline mtlv and can’t recommend enough!!!
Recently started using in my 2002 M3 and the oil runs cooler compared to the "twin power" oem oil i had been using.
Redline gear oil tends to leave a thin film at all times slightly better than motul but does have a slightly longer warm up period.
I prefer Redline over Motul, but will use Motul at times because it’s cheaper.
Redline is very stiff when cold, but holds up better under harsh conditions (hard driving).
I've tested both those oils, and was not impressed with the results. Both oils still needed changing at 5k.
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