Posted June 01, 2011 - 09:36 AM
for a total of 4.5 hours and the 16 hp onan used about 6 oz. of oil.
Does that sound bad? It doesn't smoke or smell like it is using oil.
Posted June 01, 2011 - 09:57 AM
Posted June 01, 2011 - 10:20 AM
Posted June 01, 2011 - 10:41 AM
Kind of reminds me of what my grandfather used to say " the engine that uses oil never runs out but the guy who says his never uses oil will burn his up because he doesn't check it ! "
but requires vigilance in checking oil level.
Posted June 01, 2011 - 12:20 PM
Posted June 01, 2011 - 03:12 PM
- Texas Deere and Horse and KennyP have said thanks
Posted June 01, 2011 - 05:31 PM
Posted June 01, 2011 - 06:15 PM
Just kidding though as you should still change the oil. I don't think 6 oz is really that bad for four outings of mowing for 1.5 hours a piece. Like has been mentioned if you don't have the bluish white smoke coming from the exhaust I would check the breather and reed valve. There is an Onan service manual in the manuals section and it has details on how to check and clean the breather.
Posted June 01, 2011 - 06:24 PM
Thanks Hydriv, That is good info. I have been using straight 30W in my Kohler forever, but was thinking of going to a multi weight oil, or Synthetic..
AMSOIL does make a synthetic that is meant for outdoor power equipment engines that need a straight 30 weight. Your engine would run slightly cooler using a synthetic. The question that only you can decide is this. Do you want to spend that much more for a synthetic? You can't leave it in the engine any longer than if you used dino oil. So...if you dump your oil twice per year, then do the math on the price difference. The choice is yours.
Millions of those Onan's have worked just fine on dino oil. The secret is changing it often to get rid of the contaminants.
- Texas Deere and Horse said thank you
Posted June 01, 2011 - 06:46 PM
I've seen engines that burned a little bit of oil stop using oil and also seen engines that it made no difference on oil consumption with either oil used.
From what I've seen 2 areas where Synthetic makes a difference is in the summer when an engine is pushed hard it seems to run cooler, use less oil and be more consistent in terms of power delivered.
In the winter easier starting oil doesn't thicken up as much.
Also I notice the oil stays cleaner longer.
It is more expensive but how many lyters, quarts do you need to change oil.
Case in point my 3wheeler which is the most used and reliable piece of equipment that I have will burn oil with mineral oil in it but with synthetic in it, I can go a whole season of grass cutting without adding any.
It has a vert shaft B&S 18 hp opposed twin.
K3522 maybe you might want to try synthetic see if it makes a difference, I'm not saying it will but if your not loosing oil from a bad seal or breather problem as has been said by others it might work for ya.
Edited by DH1, June 01, 2011 - 06:52 PM.
- Texas Deere and Horse, IamSherwood and JDBrian have said thanks
Posted June 02, 2011 - 09:45 AM
Posted June 02, 2011 - 10:00 AM
Posted June 02, 2011 - 10:34 AM
I don't know of any synthetic straight grade products. All the one's I've seen are multi-grade. Surprise me, someone.
Posted June 05, 2011 - 07:14 AM