I’ve been using redline in my 2020 fxlrs for the last 3 years. A few guys I know swear by it.
So far redline 20w60 is doing great in the summer heat
My first service after purchasing my Harley, I used SYN3 in all three, since then I’ve religiously used REDLINE kits.
I’ve used Motul, LiquiMoly, Molygen, and Redline 5w40. Oil analysis was best with the Redline, but it’s pricey…although worth the better numbers IMO.
I use Redline 5w-40 because I noticed my engine burns a quart every 2000miles using other brands or thinner grades. With RedLine there is barely any consumption.
I run Red Line oils in my H-Ds and Indian.
Get the Redline 5W-30…you won’t be disappointed. I was floored by how much better my Z performed with this oil. I’ll never use anything else.
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.
Having had multiple Subarus that leak oil like crazy (they all do when they get old) the leaks are most likely too much for the stop leak additive to fix anyway.
So when i changed the car to 10w40 redline I noticed that the car began to knock around 3-4k which it didn't do before and now it seems to slowly get worse.
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