20 Best 4 Stroke Engine Oil (2022 Updated)

I live in a rural area, at least 25 miles from anything. Time to change oil and winterize the old boat. Easy way to get Quicksilver 4-Stroke Marine Engine Oil at reasonable cost. Next day delivery!

Oil recommended by Mercury for my Mercury 40HP outboard. My marine mechanic also recommends it. Walmart has the best price.

Perfect for my Mercruiser V6 which has a 3. 78 litre / 4 US qt / 1 US gallon capacity. If you have an outboard that requires 5 litres buy 3 of these and you’ll have enough for 2 services with some left over to keep onboard in case you need to top up!.

Works well. No complaints. Matches manufacturer spec’s for the Parsun 4 stroke outboard I also bought from BCF.

Mercury gets what Mercury requires. This is the oil that Mercury wishes you use in their 4 stroke engines.

I wouldnt use anything else in my mercury outboard.

Used this product since 2007 in my Grizzly 700 and before that since 1999 in previously owned ATVs. Great stuff, never have had a clutch or engine problem. Follow manufacturers recommendations and save money on repairs.

I have used yamalube for years. works vary well in motorcycle. has good feel for wheat clutch doesn’t grab or scorch like regular motor oil. fore the pries it is good investment in good bikes. IT works well in atv and snowmobile as well.

just chose right oil for right application.

I use Yama lube and all of my Yamaha motorcycles they have never let me down I have never had a engine failure of any type excellent product for the price PS I also use it in my Suzuki LTZ 400 It starts every year and runs like it should as good as new.

This should be great oil. 100% synthetic, from a top name, and meets the specs. But, come on guys- ‘noticed the power increase’ 1% claimed. If you can tell that, you must have your Superman cape on Shifts like butter compared to last oil.

We’re you using peanut butter before? I’m riding around the world on a F800GSA BMW. I always use a 100% synthetic of what ever major brand Ivan find where I’m at in the world? Yacco, Motul, Motorex, Castrol, Mobil 1, etc.

I’ve used it. But only their 100% full synthetic, top oil. I have to admit fresh oil generally makes the clunky BMW gearbox feel ‘smoother ‘, but that impression is lost fairly quickly. I’m approaching 100,000 km, all overlanding miles, including up and down Africa.

My Rotax engine uses no measurable oil between changes, and the valve clearances are like it just left the factory. Summary, buy the top quality oil, meticulously change it, and keep the dirt out.

I bought this as it is the best oil on the market. But it is expensive though. When I bought my bike used, R1 2007 with only 10,000 miles, the seller put a very cheap oil in it and it lasted only 1,000 miles, after that it smelled like burned oil when I was starting up my bike and I didn’t like that, so I bought this oil, so I will see if it last longer than 1,000 miles for the price, otherwise I will go with a slightly cheaper Motul oil like the Motul 7100 4T.

Pros: Bright color to see through the small window. Smells kinda good, but not very flower-ish. I used the 15W50 which makes the shifting not mechanical and very smooth, I will try the 15w60 next time to see if it is even more smooth.

Cons: Revzilla sells it at $85. 52 but matched the Amazon price of $61. 00. So it is very expensive.

I use Motorex in my KTM 350 EXC. Although it’s certainly expensive oil, I can’t think of more cost-effective insurance against engine wear than the exact oil recommended by the factory. As always, Revzilla makes the decision easy with great pricing, efficient shipping, and exemplary customer service.

I use this oil, which is the factory recommended oil in my KTM 690 Enduro R. I am tempted to try Amsoil 20-50 oil but I don’t want to jeopardize the warranty by doing so. I probably will use the Amsoil 20-50 after my warranty expires.

I was ordering this oil from another website and this site is by far the cheapest. Definitely will do my shopping from RevZilla more often.

I like this oil for all my air cooled four stroke engine’s, have used Briggs Oil for years. I try to keep it on my shelf it gets hard to find some times and even the master shops will not keep it in stock at time’s and when they do OH boy the price goes out of sight.

I do not care for the cheep cut rate oil in the big box stores, or at the local parts store, all they carry is what they can make the most profit on. Who would have thunk it. I think I got this worth the money this time.

And the seller was great to work with. All I had to do was push the BOY IT NOW button the next thing I know here it was at my door. GREAT DEAL GREAT SELLER Thank’s Agian!.

Only oil that I would use on my craftsman mower. Have used for years and no trouble so far. My mower is used almost every week year round. Mowing summer & moving snow in winter. Have several attachments which I use for yard maintainence.

Great oil for Craftsman riding mower. (4 cycle). Mowers, automobiles, boats, motorcycles, etc. , all operate differently and the engines should be utilizing the oil that was developed specifically for them.

I use in my Harley Primary’s. I’ve tried several synthetic, Primary Oils, and this indeed works the best. Compensator and the whole primary drive is quieter. Clutch never slips as can be the case with some Synthetics.

Test results prove this is superior to many Syns, at minimum equal to the very best Syns. At the price offered? A bargain. Higher phosperous levels make it ideal for wet clutches. If an oil performs great in motorcycle application?.

Valvoline is all I have used for the last 50 years. I use it in all my vehicles.

Valvoline has a good product reputation, and in this case, it was what the original owner of our boat was using. This oil is for an 8HP Honda outboard, for trolling. We’re happy to use the same product.

I’m a big believer in not mixing brands either.

I buy all my need fluids and parts from Ripley,Tn. Store great help and they go the extra mile to make sure u have wut u need.

Works great for the wet clutches on an ATV. Way less expensive than the OEM brands they say you need.

Ive used the Dino 20w50 for 8 years on the same bike, no problem. When I installed a new clutch pack, I started running the full synthetic 20w50 and began to have Top gear clutch slippage. I installed a heavier clutch spring which helped but slipping returned I then started looking at the clutch plate fibers, and the pads were Hard glazed, installed some new fibers (not glazed), worked for a few weeks and slipping returned, they glazed also.

Lightly scuffed them with a wire brush and went back to 20w50 Dino oil, been fine and normal ever since. I paid 40% more for an oil that created clutch issues. The valvoline Dino oil is fine, But beware of the full synthetic, it might be an MA2 oil, but doesnt matter if it hard glazes the fibers, cause clutch slip will eventually begin.

Yeah Im shocked , but stick to the Dino oil.

This is a very good oil. I run my bike hard as I consult in 2 different locales 119, and 98 miles away from home respectively. One is through the desert, and the other goes through LA. Very different rides, very different demands on the bike’s engine, especially on Holiday weekend Friday Afternoons – the freeway is just mobbed.

I change my oil every Summer whether it needs it or not, and it was very clean when it came out. I was a little embarrassed at how new it looked. My bike runs reasonably cool at 80 on the open freeway (15), and reasonably cool when splitting traffic lanes for 20 or 30 miles at a time through the trouble spot in LA.

(5). JZ recommends only 2 oils for his Vulcan 900, and this is one of the 2. – JZ – 2019.

Haven’t changed the oil and filter yet. But I am looking for it to be no different than last year. Was using another company but it became to hard to understand there ordering system so I changed. Hope Wholesale marine continues to be a easy ordering system.

I have used this oil in my 2007 Yamaha since I bought it new. Was a little leery about not using the manufacturer’s brand oil. But Never had a problem and motor still works fine. I will continue to use this oil in all my motors.

I have been using Sierra products for a few years now on my Yamaha OB 150. I would say all the Sierra products have performed well.

I was skeptical about some of the claims of ‘better shifting’. After an oil/filter change and a 75 mile ride I believe. I normally use Bel-Ray motorcycle mineral oil or factory Suzuki motorcycle oil.

This was cheaper and genuinely improved shift performance. No clunky or long shifts. The gearbox really felt improved. I’ve put 20,000 miles on this bike and it has never shifted this well before. Geniunely impressed with this oil and will continue to use.

Highly recommended to try. The best oil I’ve found for my motorcycle.

OK I have a HONDA REBEL. Motorcycle wanted. $79 to change oil. Over ten dollars a quart to buy oil. My Rebel takes less than 2 qts. 1. 7 qts. I watched a youtube video. Used a 17 meter wrench, a. drain pan and puchased 2 qts of Valvoline motorcycle oil at Walmart for less than $9.

Very satisfied with Valvoline Motorcycle oil and Wal-Mart’s affordable price. My Rebel running strong and shifts smooth. Thank you Valvoline, Walmart and Youtube. Now I can afford to change my Rebel oil more often and have peace of mind knowing Valvoline Motorcycle oil is quality stuff.

Used for a Honda Motorcycle instead of using Gen4 oil. Works a lot better, doesn’t gum up the gas tank and the Motorcycle runs hell of a lot better now that we switched oil types.

This is the factory recommended oil for my 2021 Honda NC750x. Chaparral was cheaper than my local parts store. It was delivered within a couple of days and arrived in perfect condition. I’m very satisfied.

Recommended oil per the manual for the 2021 Honda Fireblade. Interesting that they don’t suggest synthetic oil since they have their own brand also.

Packaged exceptionally well. Plastic over the oil and then cushions inside the box to minimize movements. Box beat up but all products including oils came out perfect.

Valvoline has kept this riders FZ1 purring and running high revs for many years now. I have run Valvoline for many oil change cycles and I have complete confidence in it’s performance. I ride daily to work and then do some weekend twistie roads to get the most of my engine and I never have a hiccup.

Over 40,000 miles and my engine is still tight pumping out the horses.

I don’t often run a 10w40 in my v twin but if I use any it’s this. The Valvoline syn 10w40 motorcycle oil is less expensive than Mobil 1’s 10w40 4T and the Valvoline has a slightly thicker hot temp viscosity than the M1.

Considering oil will shear in a shared sump motorcycle I’d rather start with the higher viscosity oil. Mobil 1’s 10w40 4T is just about a thick 30 grade oil really. It’s just a hair over the 40 mark.

I’ll run this oil either mixed with the Valvoline 20w50 syn or in the late fall early spring (cold weather riding).

I only put full synthetic in my motorcycle and this is a great option for a reasonable price. I’ve used Klutz and other brands and the difference was significant. The gears feel more smoothly when shifting and the engine sounds less stressed.

It also allows me 3000 mi between oil changes unless I really ride hard. Get the 6 pack. Each quart ends up costing around $7. Can’t beat that for full synthetic motorcycle oil.

I run this in my XC 450r quad, Good oil and protects your motor just as a quality oil should. I was at a race and blew my radiator out on the next to last lap, i finished the race with a first place win.

and when i brought the quad home there was no antifreeze in the motor. one lap at that race was 8 miles long. The motor had no damage what so ever! Luck??? or GOOD oil??? Im goin with AWESOME OIL!!! I’ll be running this stuff till i die!! BTW ROCKY MOUNTAIN ROCKS!!!!!.

IšverstiShow in original languageI’m not mechanical and purchased this based on other reviews. I added it to my Westinghouse WGen9500DF 12,500/9,500-Watt Dual Fuel Portable Generator. I ran my generator after Ida and had no problems.

I’ll used this oil because I do know that STP has been around for a very long time and has always been the oil of choice back in the days.

IšverstiShow in original languageI need to return it for price and size is great. But I got it because store were I got it this was the only one because I thought would work because said small engines.

But when got home and look at are generator it takes 2 stroke oil with gas.

IšverstiShow in original languageWith the cost of lubrication products they all don’t match up to what a customers expectations are. This oil is great and makes my mower run quieter and stronger than before.

lt is now much easier to start on the first pull every time.

I have a 250cc Honda dirt bike and I alwayed used Rotella T4/T6 fpr my motorcycles but for some reason this bike was starting to get hard to get into neutral. So I went tried this Valvoline and guess what? smooth like butter again.

So this is my new motorcycle oil for my kawasaki and honda. is the same price as the Rotella 6 because a 4 quart jug is $20 and one of these quarts is $5. so $5 x 4 is? yup $20 dollars. so is the same price.

So instead of buying $8 geniune Kawasaki/honda quarts ( that of course work bit are expensive) Im gonna buy these $5 Valvoline quarts that work too but are cheaper. Sorry RotellaT6 is been real.

I’ve put this oil in my 01 trx400ex for over a year now and i never had any issue with it! I wrote my machine in winter at -20c witout trouble. This oil is prenium quality

Oil for 80k engine did good same performance as a more expensive oil.

That’s what you need ! A good product for my old machine

I have used this oil and filters for many years with good results.

run an outboard shop use this oil in everthing

I don’t really have many motors around here that do not have Amsoil already. My Honda Big Red MUV 700 was the hold-out. I’ve had the side by side for about a year or so and did not know the type or weight of the oil or gear oil or when last changed.

Honda recommends using their oil at a 10w30 weight while the Amsoil recommendation was for 0w40 and I followed that recommendation. It’s winter in MN now and riding at 0 or -10 is just not for me so I haven’t had any long rides yet and that may not happen until late March.

But from the short rides I can tell the transmission is engaging faster and smoother (engine and tranny are lubed together) and the engine seems to be running quieter. Harder use will start mid March or early April and I can edit this post then.

I have never experienced disappointment from using any Amsoil product and I don’t expect anything but superior performance in the Honda when using it.

We used it in our Honda pioneer 1000 for the first time. Immediately we could tell the engine ran quieter, shifted smoother and had more power. Fuel economy has increased and cold starts are a non issue now.

Running tracks in deep snow the engine no longer overheats. We are so impressed with the Amsoil performance that we are switching all our vehicles and small engines over to amsoil.

Bought a used Yamaha Bruin over a decade ago. Changed all the oils to Amsoil when I got it. You could tell it was smoother and more responsive. Previous owner complained that it didn’t like to start in the cold.

With the 0W-40 it fires right up even in -20 Celsius. Plowed snow with it for a decade now with no problems.

Product available quickly. Compliant. Good quality mower oil from the same brand MC Culloch.

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