Red Line 15305 SAE 5W30 Fully Synthetic Motor Oil - Gallon

This is without a doubt the best motor oil on the market. Over the years I've used various different brands of synthetic including Mobil 1, Castrol Syntec, Pennzoil Platinum, & Liqui Moly just to name a few, and Redline is the only brand I've tried that made the VQ37VHR motor in my Infiniti Q50 run smoother and quieter. I went from Mobil 1 Extended Performance to Redline and I immediately noticed smoother and quieter acceleration, and during idle the engine is barely audible. I have also noticed a slight improvement in fuel economy as well. It's hard to believe that going from one motor oil to another in the same viscosity could make any noticeable difference in engine operation but in my case it definitely did because the engine really does feel happier and healthier with the Redline oil.There's also a lot of good information out there that shows Redline oil can actually reduce oil temperatures as well as keep your engine cleaner. And the added detergents, ZDDP, molybdenum and ester molecules can really help to reduce friction & engine wear and keep the engine clean over time. But the synthetic ester base is what really makes the difference between Redline and all of the other motor oils out there, and it's what also accounts for the increase in price.The only downside is it's expensive when compared to most of the other synthetic brands out there, but this is an Ester-based Group V synthetic motor oil that is aviation grade, and you get what you pay for. For me it's worth spending the extra $15 per oil change and I'm definitely not planning on switching to any other motor oil again as long as the Redline continues to perform this good.

Awesome

Have been using this oil in my 2014 Infiniti since new - 5k OCI. The price is double now! . Idk what I’m gonna do.edit 7/25: price is coming down to 60. I doubt will come down much lower. but who knows. the price is still now more than 33% higher than when I first started using it. however will continue to use.my qx50 2014 seems to like it at 90k miles now. I also use shell v power to keep engine clean.these vq37vhr engines are considered reliable but Nissan is not what it used to be.if you have one of these cars then when doing oil change you should tilt the car so the passenger side is lower. this will dispose of 4 0r 5 more ounces of old oil - give a good tilt.

I've only ran this for a few hundred miles. I was using synthetic chevron delo 5-40 in a turbo Volvo v70 and was perfectly happy with the performance of the oil. I have too many people and too many vehicles to maintain in my immediate family. I needed to get a couple cars down to a once per year oil change schedule @ 10k miles with a long life oil filter of course. I'm hoping this oil will do this. I can't imagine it not being able to go 10k as that is the interval most newer BMW and Mercedes engines are under and I seriously doubt the stealerships are using such a high quality oil as redline.Anyway, what really got me almost instantly was how quiet the engine became especially being outside of the vehicle with motor idling. I can't believe how quiet it is. Performance and overall smoothness in acceleration is also much nicer. This is coming from someone already using a synthetic oil although not a true synthetic, even Mobil 1 and castrol syntec is not a true synthetic anymore but redline is! I'll be putting this oil in all of my gasoline powered vehicles. I'm impressed and I haven't used it long.Update-I still use this oil on my volvos. Performance is noticeable and I can change oil once a year. I use a wix or k&n filter with great results! You don't have to worry about turbo coking either with this oil, it's a true synthetic not hydrocracked dino oil they are allowed legally to call synthetic which is why other "synthetics" are lower in price. Get what you pay for.

Arrived on time and not leaking!

Very solid oil for motorsports use. HTHS is 3.8 (which is essentially a 40w oil), so I'm less concerned with shear at higher temperatures. Healthy dose of ZDDP as well. Very competitively priced compared to other race grade or boutique oils. Would like to see it offered in 5qt jugs, rather than a gallon.

I have a 2010 Prius w/ 168,000 mi. It's been burning/using oil since about 130,000 mi, which I found out is common for this particular year. I was changing ...well, mostly adding oil every 2000 miles if not more frequently. If I let it go more than 2-3 weeks without checking the dipstick since last topoff, I'd be alarmed to see maybe 1/4 oil remaining on the dipstick. And I was getting about 45-48 mpg.Immediately after I started adding in Red Line 5/30 synthetic, per recommendations from several people on Prius Owners site, the time between oil topoffs went up to more than a month. Now I seem to be burning about half the amount of oil but there's another benefit: my mileage seems to be more consistently in the 48-51 mpg range. And that's more recently as the weather is getting colder here in the northeast...I'm still holding 49-50 mpg (not estimated; I calculate after every gas fillup) as the temps are now in the 40s and 50s, typically a time of year when mileage drops to 43-45 mpg. We'll see how we do when it's really cold but I'm sold on this oil. The car sstill runs great, but the motor actually sounds a bit quieter. Maybe my imagination, but the mpg numbers and the less frequent oil adding are not.

I recently used this oil for an oil change for my 2024 Nissan Frontier. The oil change was the first after the "break-in" period for the engine. It has a naturally aspirated 3.8L V6. The engine is a little quieter and has a nice and smooth purr to it now. The 5W30 provides a better level of viscosity and is not so thin like 0W20 oil. This is ester based motor oil and they tend to have much better film strength than other oils. The viscosity index is higher/improved. This is VERY good oil that does not shear down and does not cook off/burn/evaporate. The additive package is very robust.