Maxima Castor 927 2-Stroke Oil Review

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Maxima Castor 927 2-Stroke Oil Review_compressed

Hands-On Review Of Castor 927 Ester-Based Two-Stroke Oil

I’m not going to tell you that Castor 927 by Maxima Racing Oils is the best 2-stroke oil for your dirt bike because that’s not the case. Full synthetic 2-stroke oils always make more power and burn cleaner than natural, conventional, or blended oils.

Maxima Castor 927 Racing 2-stroke oil
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Cleaner power is the whole point of full synthetic oil. What it comes down to is your personal preference.

I prefer castor-based oils over synthetic oils for the simple reason that I like nature. I love the way nature looks, smells, and tastes fresh off the grill with mashed potatoes.

So. I like nature, but I also like riding 2-strokes… Stay with me!

2-stokes and nature have never mixed, but if I’m going to blast smoke through the trails, I might as well go with something natural and renewable.

Castor oil has been around for a long time and has had MANY uses over the years, but I won’t get into that in this review.

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Drawbacks Of Using Castor Based 2-stroke Oil

  • Castor oil leaves residue in your cylinder.
  • The “shelf” characteristics of castor oils change with the temperature.

At least these USED to be problems with castor 2-stroke oil.

Maxima Racing Oils has refined the process as far as it can while keeping its castor oil mostly natural. Yes, I understand that unnatural chemicals are used when refining an organic material to match the performance of full synthetic oil. Still, Maxima has managed to keep Castor 927 as natural as possible.

The main drawback of using castor-based 2-stroke oil is residue build-up. Fortunately, gunk building up in your cylinder is no longer the issue it used to be, thanks to the advanced refinement processes available today. Yes, some residue will build up in your cylinder, but it won’t be enough to cause you problems.

This claim is based on servicing your cylinder at regular maintenance intervals. If you never perform maintenance, the build-up of your bike and cylinder residue will be the least of your problems. Click here for a great price on a new piston!

When I say “shelf” characteristics, I’m talking about how the oil will change in the bottle. Castor oils used to be significantly affected by temperature. In hot weather, they would thin out, and in cold weather, they would thicken. (All oils change with temperature, but the castor is more affected by it.)

Again, Maxima has worked their magic and almost eliminated this issue. Castor 927’s shelf characteristics stay consistent from around 20 to 105 degrees. The shelf qualities of ANY 2-stroke oil will change once mixed.

I have taken Castor 927 from 10 degrees in Minnesota to 115 degrees in Texas, riding the same dirt bike with consistent performance.

Castor 927 matches other full synthetic 2-stroke oils in price and performance, so if riding green(er) means having a little residue build up in my cylinder, I can live with that.

It’s important to note that Castor 927 2-stroke oil is a PREMIX and unsuitable for oil injection systems.

Castor 927 Details

Now that I have shared my opinions on Castor 927, let’s examine the details.

High-quality 2-stroke oil has three main characteristics: good combustion properties, excellent lubrication properties, and resistance to residue build-up on dirt bikes.

Most reasonably priced, decent Two-stroke oils generally possess two of the three characteristics. However, they always seem to fall short in the other category.

However, Maxima Racing Oils’ Castor 927 2 Stroke Oil seems to break the norm. It boasts a high rating in each category: combustion, lubrication, and little build-up.

Castor 927 Two Stroke Oil At-A-Glance

• Blends three crucial components into one: refined castor oil, a special synthetic, and a unique additive system.

• Runs cleaner than other castor-based oils

• Has excellent film strength

• Is biodegradable

• Gives extra protection for dirt bike engine components at higher temperatures

• Works great mixed with leaded and unleaded fuels

The Benefits Of Using Castor 927 By Maxima

When compared with other similar brands, Maxima Castor 927 has displayed the following benefits:

• The unique blend (refined castor oil, a special synthetic, and a special additive system) reduces carbon and gum formation and prevents rust and corrosion.

• Maxima Castor 927 keeps power valves cleaner for longer than other brands and ensures that they operate correctly.

• It smells great and doesn’t give off THAT much smoke unless your carburetor is jetted wrong.

What Other Riders Are Saying About Castor 927

While Maxima Castor 927 has been proven effective at reducing engine build-up and preventing rust and corrosion in your dirt bike, the actual results I’m more concerned with are from people who have used the oil.

Here is a little of what riders have to say about it:

One rider has used Castor 927 for four years in a CR500 with no issues. He says he hasn’t had any fouled plugs or scuffing on the piston.

Another rider uses it in his CR250 at a 40:1 ratio and says it doesn’t smoke much and smells the best of all other premixes.

These types of reviews are a common trend with the Maxima Castor 927. The oil is top-quality; there’s no doubt about it. The most common praise the oil receives is its excellent lubrication properties and great smell.

My Final Thoughts On Maxima Castor 927 2-Stroke Oil

Based on my research and personal experience, I would have no problems giving Maxima Castor 927 my full recommendation (I use it in all my project dirt bikes). It seems to uphold the standards that Maxima Oil requires in its products, and the reviews from consumers seem to back that standard up.

Get a bottle to try for yourself HERE! → https://amzn.to/40rSFxl

Watch This Video To See Me Ramble About Castor 927!

If you have any questions or comments, please leave them in the comments or on our Facebook page!

Next Review – Leatt GPX Neck Brace

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14 COMMENTS

    • I wouldn’t use it regularly. For one it’s too expensive to be used in lawn equipment, plus lawn equipment is designed to run conventional. That being said, I have used 927 in my weed whacker in a pinch and it ran SUPER strong!

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