slimbo3006
ArboristSite Member
So not directly chainsaw-related but definitely oil related and I know how everyone loves to talk about oil and mix ratios
anyhow so today was a pretty day and I took my 15hp evinrude outboard for a quick run... I mixed up 2 gallons of fuel for the boat. I used XD100 oil. mixed it around 45:1 or so. I also took my gallon of mix for my saw/trimmer with me just in case. It is amsoil Saber at 50:1. (got a small bottle from friend to try) both cans are from the same fuel. 92 Ethanol free. maybe 2 weeks old. Possibly 3 at most. Anyhow took the boat out and it ran great. It tached out steady around 5,920-5,960 RPM at WOT. This was on the XD100 outboard oil at ~45:1. Then for no real reason whatsover, I decided to switch to the other can with the amsoil saber at 50:1. I did this while idling and it never missed a beat. Went another couple hundred yards to give the new fuel time to get to the engine and I noticed the rpms were only hitting 5,740. It held around this for the whole time on the fuel. I then switched back to the XD100 mix and shortly after the rpms were back up to 5,940.
Just thought it was interesting that RPMs fluctuated by 200rpm with nothing more than a different oil/mix ratio. That being said, If I did not have the tach on the motor, I would have never know the difference..
Both of these brands are quality oils. mix ratio is slightly different but pretty close.. same batch of fuel... not sure what the flash point difference is between the 2 oils
I know it is minor...but.....wonder what the difference is??
anyhow so today was a pretty day and I took my 15hp evinrude outboard for a quick run... I mixed up 2 gallons of fuel for the boat. I used XD100 oil. mixed it around 45:1 or so. I also took my gallon of mix for my saw/trimmer with me just in case. It is amsoil Saber at 50:1. (got a small bottle from friend to try) both cans are from the same fuel. 92 Ethanol free. maybe 2 weeks old. Possibly 3 at most. Anyhow took the boat out and it ran great. It tached out steady around 5,920-5,960 RPM at WOT. This was on the XD100 outboard oil at ~45:1. Then for no real reason whatsover, I decided to switch to the other can with the amsoil saber at 50:1. I did this while idling and it never missed a beat. Went another couple hundred yards to give the new fuel time to get to the engine and I noticed the rpms were only hitting 5,740. It held around this for the whole time on the fuel. I then switched back to the XD100 mix and shortly after the rpms were back up to 5,940.
Just thought it was interesting that RPMs fluctuated by 200rpm with nothing more than a different oil/mix ratio. That being said, If I did not have the tach on the motor, I would have never know the difference..
Both of these brands are quality oils. mix ratio is slightly different but pretty close.. same batch of fuel... not sure what the flash point difference is between the 2 oils
I know it is minor...but.....wonder what the difference is??