Suzuki Oil Changes

[1bandit]

All I use in DF140 Suzuki's is 100% synthetic. I use mobile one 10w40 in the winter and 20w50 in the summer. That is what the Suzuki owners manual calls for. synthetics give superior film strength and performance over all regular and blended oils. Look at what they put in airplanes, high performance cars and expensive industrial and farm equipment. As far as corrosion resistance I think it is impossible for any part coated in any oil to corrode. It is proven that synthetics offer the most protection during cold starts which is when most wear occurs

[knotreel]

From my Suzuki DF300 factory service manual

"Use only oils that are rated SE,SF,SG,or SJ under the API (American Petroleum Institute) classification system or NMMA FC-W classification system.

Ther Viscosity rating should be SAE (or NMMA FC-W) 10W-40........"

I don't see anything about Suzuki brand or any other brand. Me personally I think brands are mossty about advertising and all major oil brands are plenty good for a four stroke outboard. Major Brands = Shell, Mobil, Valvoline, Pennzoil, Castrol and maybe a few others. I think that Castrol and and maybe Pennzoil probably just buy oil stock and bend theirs but that's ok in my mind. I don't belive that the outboard mfg's know as much about oil as these guys and the outboard mfg's certainly don't even blend their on oil. So I buy one of the majors, API classifaction, from places like AutoZone or whatever for my DF300's that cost less that 2 bucks and is readly available.

I can't think of any reason why I would ever want to buy "Suzuki" oil or how it could be better.

[Capt Rick Hiott]

Welder said,,,,,"These motors run a lot cooler than a Car/Truck motor"

Not to disagree,,but the thermostat regulates that, and its pretty close to the same temp as your car.200-210

[SCAngler]

I run 100% synthetic oil in my four strokes and my 2 stroke engines.They hold up better than bean oil imho

[Jaime Lyn]

All I use in DF140 Suzuki's is 100% synthetic. I use mobile one 10w40 in the winter and 20w50 in the summer. That is what the Suzuki owners manual calls for. synthetics give superior film strength and performance over all regular and blended oils. Look at what they put in airplanes, high performance cars and expensive industrial and farm equipment. As far as corrosion resistance I think it is impossible for any part coated in any oil to corrode. It is proven that synthetics offer the most protection during cold starts which is when most wear occurs

I've been using Mobile 1 10w30 in my DF250 as I've yet to find their 10w40 in my area (Mich.) should I be concerned about the wt difference ?

Edited March 4, 2010 by Jaime Lyn

[bill erhardt]

Right at 4,300 hours on the water over the past five years translates to about 45 oil changes on Suzuki four strokes. Castrol GTX at every change and no oil related problems. I buy the GTX at Walmart for $2 to $2.50 per quart in 4 or 5 quart containers.

[Drailey]

All I use in DF140 Suzuki's is 100% synthetic. I use mobile one 10w40 in the winter and 20w50 in the summer. That is what the Suzuki owners manual calls for. synthetics give superior film strength and performance over all regular and blended oils. Look at what they put in airplanes, high performance cars and expensive industrial and farm equipment. As far as corrosion resistance I think it is impossible for any part coated in any oil to corrode. It is proven that synthetics offer the most protection during cold starts which is when most wear occurs

[Drailey]

Did you break the engines in with reg oil before switchin to synthetic?

[cajuned]

Castrol GTX in my 175, I think that my owners manual told me to nnt to use synthetics, Will check and see if I remember right.