Ceramic-Enhanced Synthetic 2-Stroke Oil — Low-Smoke, Multi-Ratio, Every 2-Cycle Application

Always check your engine manufacturer's owner's manual — this is non-negotiable and the single most important decision you'll make about 2-stroke oil. Running too lean (less oil than specified) can cause piston scuffing or engine seizure within seconds of running under load. Running slightly rich is much safer than running lean. Quick reference: most modern 2-stroke equipment made since the 1990s specifies 50:1 (2.6 oz per gallon of gas). Some Stihl equipment specifies 50:1 with Stihl-branded oil but 40:1 with non-Stihl oils (this is a warranty/liability policy, not a lubrication requirement — 50:1 at premium oil quality is sufficient; always verify with your Stihl dealer). Vintage outboards often require 25:1 or 32:1. Pre-1970s equipment may require 20:1 or 16:1. See the Mix Ratio Reference Chart above for specific amounts.

Yes — Cermax 2-Cycle is formulated to meet NMMA TC-W3, the National Marine Manufacturers Association standard required by major 2-stroke outboard manufacturers. Compatible with Mercury 2-stroke (older carbureted and OptiMax DFI), Yamaha 2-stroke (HPDI and older V-series), Evinrude (E-TEC and classic), Johnson, Tohatsu, Suzuki older 2-stroke, and Mariner. Works in both pre-mix and oil-injection outboard applications. Saltwater-safe. Important note: modern 4-stroke outboards do NOT use 2-cycle oil — if your Mercury is a Verado, your Yamaha is an F-series (F25, F150, F200, F300), or your Suzuki is a DF-series, you have a 4-stroke outboard that uses its own crankcase oil. For those, see the Cermax Marine 4-Stroke oil line (or contact us at 239-344-9861).

Yes — Cermax 2-Cycle works in modern 2-stroke power equipment from all major brands. Stihl MS-series chainsaws, FS-series trimmers, BR-series blowers. Husqvarna 400/500/595 series chainsaws, 500-series trimmers, 500/580 BTS blowers. Echo CS-series chainsaws, SRM-series trimmers, PB-series blowers. Makita, Dolmar, Shindaiwa, Redmax, Troy-Bilt, Ryobi, Poulan, and virtually every 2-stroke power equipment brand. Most modern (1990s+) equipment uses 50:1; some older Echo and Stihl equipment uses 40:1. Stihl warranty note: Stihl's warranty policy may require Stihl-branded oil at 50:1 specifically during the warranty period — verify with your Stihl dealer before using aftermarket oil on warranty equipment. After warranty, Cermax 2-Cycle works at the same 50:1 ratio.

Yes — Cermax 2-Cycle works in all 2-stroke dirt bikes. KTM 250/300 SX, EXC, XC (carbureted and TPI fuel-injected). Husqvarna TE/TX 250/300 (Husky-branded but KTM-based). Yamaha YZ125, YZ250, vintage DT and RD series. Suzuki RM125, RM250, vintage RG. Honda CR125, CR250 (vintage), NSR. Beta 2-stroke enduro line (RR 250 2T, 300 2T, Xtrainer). GasGas, Sherco, TM Racing. Most modern 2-stroke dirt bikes specify 50:1 for trail and enduro use; some racing and higher-output tune scenarios run richer (32:1 or 40:1) for maximum piston protection under sustained high-RPM operation. For KTM TPI / Husqvarna TPI fuel-injected 2-strokes, Cermax works in the separate oil reservoir (no pre-mix — straight gasoline in the fuel tank).

Cermax 2-Cycle works in both pre-mix and oil-injection 2-stroke systems. Oil-injection designs (used in most modern marine outboards, KTM TPI / Husqvarna TPI fuel-injected dirt bikes, Ski-Doo E-TEC and Arctic Cat C-TEC2 snowmobiles, some personal watercraft) have a separate oil reservoir that the engine draws from automatically, metering the correct oil-to-fuel ratio as the engine operates. For these systems: fill the dedicated oil reservoir with unmixed Cermax 2-Cycle; fill the fuel tank with straight gasoline (no pre-mix). The engine's oil pump handles the ratio internally — typically 50:1 average under light load, up to roughly 40:1 at wide-open throttle in some systems. Compatible with Mercury AutoBlend, Yamaha Precision Blend, Evinrude E-TEC oil-injection, Ski-Doo E-TEC, and similar designs. Critical safety note: verify your oil reservoir is filling properly on first use — oil-injection pump failures are a common cause of 2-stroke engine seizure, and a failing pump delivers no warning before the engine runs dry.

Yes — Cermax 2-Cycle is formulated to remain stable and mix properly with ethanol-blended gasoline (E10 = 10% ethanol, E15 = 15% ethanol) common at US pumps. However, ethanol fuel accelerates degradation of 2-stroke pre-mix: ethanol attracts atmospheric moisture, encourages phase separation, and breaks down faster than ethanol-free gasoline. Practical guidance: use pre-mixed fuel within 30 days of mixing, and sooner if possible. For seasonal equipment (chainsaws used only in fall cleanup, snowblowers in winter, outboards in summer), drain the fuel tank and run the carburetor dry before storage — stale pre-mix is the #1 cause of "won't start in spring" problems. For long-term storage, consider ethanol-free pump gas (available at some marinas, small-engine dealers, and marked gas stations in most US regions). A fuel stabilizer (STA-BIL, Star Tron, Sea Foam) added to pre-mix can extend usable shelf life to 6–12 months but does not eliminate ethanol-related problems.

Yes — Cermax 2-Cycle is formulated to meet JASO FD, the top-tier 2-stroke oil specification that requires both low-smoke performance and high-detergency cleanliness characteristics. The synthetic base stock burns more completely than older petroleum 2-stroke oils, producing noticeably less visible exhaust smoke at operating temperature (startup smoke is normal with any 2-stroke oil until the engine warms up). The low-ash additive chemistry helps prevent spark plug electrode fouling, which is the common "won't idle" / "misfires under load" complaint on 2-strokes running older-generation oils. Important caveat: if your mix ratio is too rich (more oil than specified), you'll still see smoke and foul plugs regardless of oil quality. The oil formulation reduces smoke at the correct ratio — it doesn't eliminate smoke from over-mixed fuel. Some visible smoke at startup, idle, and heavy load is normal even with the best 2-cycle oil properly mixed.

Pre-mixed fuel (Cermax 2-Cycle + gasoline): 30 days maximum for reliable performance, shorter on ethanol-blended pump gas. After 30 days, expect hard starting, rough idle, and potential carburetor varnishing. Fuel stabilizer extends shelf life to 6–12 months in the mixing container but does not indefinitely preserve pre-mix. Unmixed Cermax 2-Cycle oil in its original sealed container: 3–5 years when stored at room temperature away from direct sunlight, freezing, and extreme heat. For seasonal equipment, mix only what you'll use in the near term, and store remaining oil unmixed. At end of season for snowmobiles, outboards, chainsaws, and other seasonal 2-strokes: drain the fuel tank, run the carburetor dry, then store — this prevents the stale-fuel problem that plagues 2-stroke equipment after winter storage.