






🛵 Ride hotter, last longer — oil engineered for the relentless rider.
Red Line 12604 20W60 Synthetic Motorcycle Motor Oil is a premium polyol ester-based lubricant designed for high-performance motorcycles and versatile engine types. It offers exceptional thermal stability up to 280°F, advanced multigrade technology inspired by jet engines, and global availability, making it the go-to choice for riders demanding superior engine protection and longevity.






| ASIN | B000CP8EYW |
| Best Sellers Rank | #266,186 in Automotive ( See Top 100 in Automotive ) #1,081 in Motor Oils |
| Brand | Red Line |
| Brand Name | Red Line |
| Compatible with Vehicle Type | Motorcycle |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 131 Reviews |
| Global Trade Identification Number | 00083522126045 |
| Included Components | 20W60 M/CYC 1QT |
| Item Type Name | 20W60 M/CYC 1QT |
| Item Weight | 1.7 Pounds |
| Liquid Volume | 1 Liters |
| Manufacturer | Red Line |
| Manufacturer Part Number | 12604 |
| Manufacturer Warranty Description | Warranty |
| Package Information | Bottle |
| UPC | 083522126045 |
| Unit Count | 32.0 Ounce |
| Vehicle Service Type | Motorcycle |
| Viscosity | 20W-60 |
B**R
Too pricey. But always remains stable
I run an high compression 124” Harley hard. It runs at 230 - 280 degrees I’ve always relied on this oil not to breakdown but im really tired of $100 oil changes (oil and filter) I think I’m going back to valvoline synthetic after this season
R**K
Made for shovels and evos. Works great so far.
Been using it in my 97 FLHR Evo 100in, no problems. I live in AZ and have no oil cooler....yet. I was hesitant about not using dino oil but talked to them and thought I'd give it a shot. Will reorder when needed. Thinking maybe a shot of ProLube when it gets ridiculous hot here. **Update** just changed the oil @ around 4k (ish) and I could have gone another 2k+ im liking this oil for sure, i also added 3oz. Prolube so we'll see how that combo works. The old oil was dark but it still held viscosity... I just couldn't see running it dirty when I had the fresh stuff. This time im WRITING DOWN my mileage 😏
C**O
Great!
Great!
D**Y
The only oil in my Harleys for the last 15 years
I actually first found Red Line being sold at a Harley Dealership because several of the mechanics swore by it. With very few exceptions, this is what I've been using when it's in the heat of summer in Florida, and 20/50 when the average daytime temps fall below 90.
B**L
My High Mile teenage Harley runs smooth!
Good stuff for old Harleys!
Y**D
Not overly expensive and willing to try!!
Highly rated product by users who know. I am a first-time user in my Harley and will see how it goes.
J**D
Great Choice for Las Vegas area
As our summers become longer and hotter, this product has served me well for the last two years. Winters do not get that cold, and I don't ride when the temperature is below 50 degrees.
J**N
I put it in all my holes...
I use it in a 1999 Harley Davidson Dyna Wide Glide (FXDWG) with an 88 Twin Cam engine. This was the first year the of the Twin Cam which was notorious for oiling issues, so lubrication is a big deal for me. I've read up and tested several oils in my 88TC over the last few years. Some steps froward, some steps back, but the Red Line 20w60 was the huge leap I was looking for. It makes my engine run cooler on the 100+ degree California summer days and quieter everyday. The engine is simply happier when I run Red Line. I've since switched to Red Line products in all 3 holes. Red Line 20w60 (or 20w50 for cooler months) in the crankcase, Red Line Primary Fluid in the primary case, and Red Line Shockproof in the transmission. This combination of lubes makes my bike happy and ready for some action. Happy trails everybody!!!
Trustpilot
3 weeks ago
5 days ago