Ok to use in a yamaha ?

[Eagle 1]

not going to drive 100 mile plus to buy yamaha products . any reason not to use this ?

[SeaRay]

I would not use these. Quicksilver is an excellent product and Walmart usually carries it. I use it in my Yamaha along with seafoam and stabil. I would stick with one of the oils sold by the manufactors. Years ago I had some hard staring issues with a small Mercury. I was using Penzoil product. My shop guy recommended I switch to Quicksilver and it was like I had a new engine. I stayed with Quicksilver through the 20 years I ran a Johnson too. I never would have believed changing oil would have made that big a difference, but it did, at least for me.

[feelay]

Buy it on Amazon and it will show up at your door.

["G"]

Buy it on Amazon and it will show up at your door.

What he said

[feeshrman]

I have a Yamaha 225 2-stroke. My local boat dealer handles mercury. I've bought outboard oil from them for years now with no problems, they have it in 55 gal. drum so I just bring a jug and refill. I also use their fuel treatment.

[Rees Guide]

He's talking bout 4 stroke oil, completely different animal.

[Cray]

Castrol is all I use in everything. Their semisynthetic is one of the best made. We could sit and debate all day long on this subject but main thing is does the oil you are using meet the spec that your manufacturer recommend? Should be listed in Manual and on bottle. This is just my opinion after 50+ years of working on every kind of engine you can imagine, the secret in all this is using the best quality oil filter for your particular engine and a oil that meets Manufactuer spec.

[BigRiverMarine]

You can use any of the name brands at Walmart. I run Castrol when I don't have YamaLube. I don't run synthetic oils in outboards. They run off the pistons and rings worst than standard oils. Doesn't bother an auto because you drive it every day. Boat engines set up a lot, and the synthetic oils don't have the same cling ability on the rings as standard oils causing a dryer start. That's per Yamaha, and Suzuki set up manuals. Doesn't mention blends, but Yamaha nor Suzuki offer synthetics, or blends for their 4 strokes.

Oh Yeah, what Carl said^^^^^^^
Or I can bring ya some.

[Wind Knot]

I'd order Yamalube and stick with it, since you're not changing the oil in your four stroke all that much. I rarely get excited about manufacturer's saying to use only their products with their products, but I tend to follow it on marine lube.

Additionally, I would want to cover my bases in the event of a warranty repair or factory recall. I have heard of warranties being voided because the owner used products that differ from the manufacturer's recommendation. I think, though, that's no longer an issue. I'm going off of distant memory, but one of the big guys got in trouble with voiding warranties on engines due to different brand lubes, but they had to honor the warranty as long as the owner was using a lube that met NMMA(?) specs. As long as the lube is in spec, the warranty can't be voided. I think.

It was explained to me once that it's best to choose one brand and stick with it when it comes to two-stroke motors, especially oil-injected ones. Apparently, mixing brands could lead to some gumming issues and separation because different brands will have different weights and mixed detergents and such. I have no idea if this is true, but I have followed the adage and seem to have fewer problems with oil and such (knock on wood) than others. Even though my current motor (Merc) is pre-mix only, I still make sure to use Quicksilver lube in the gearcase and gas tank.