boat oil in lawn mowers

intrepid

Seaman
Joined
Oct 30, 2002
Messages
50
Hi<br /><br />sorry if I'm posting in the worng place but I'm not sure how to class this question.<br /><br />Can boat oil the mercrusier stuff 15w-30 be<br />used in snowblowers and lawn mower 4 cycle engines crancases without any evil reprecusions?<br /><br />On the cheap hand ;> <br /><br />question 2 if i re-cycle the stuff after using my boat for less than 50 hours into the crankcases <br />of these little beauts (they are over 12 years old) will my cheapness causes problems ?<br /><br />Is this oil high quality enough to be usefull<br />still? anyone tried it ?<br /><br />ie temps winter snowblower -40C <br /> temps summer mower +35C<br /><br />normally they use auto 5w-30 oil <br /><br />thanks
 

ICEMAN

Petty Officer 1st Class
Joined
Dec 11, 2000
Messages
292
Re: boat oil in lawn mowers

HI, Good question, My answer ??????. I'm a bit cheap too, but probably would'nt. Marine engines run under strenous conditions and in a wet environment. The old oil could have water or other contaminants in it, that may cause damage to the other motors. Is saving the price for a quart of new oil, worth the expense it may cost to replace the snowblower or lawnmower. :rolleyes:
 

Oil Man

Petty Officer 3rd Class
Joined
Nov 5, 2002
Messages
76
Re: boat oil in lawn mowers

I agree with Iceman, your snowblower and mower probably each take less than a quart of oil. Buy new stuff.<br />Also, at -40C petroleum oil is like molasses. Use synthetic oil in the snowblower.<br /><br />Dave
 

B_Eager

Petty Officer 2nd Class
Joined
Feb 12, 2003
Messages
109
Re: boat oil in lawn mowers

I have been using it in my mowers and snow blower for years. Remove it from the boat. Put it in a clean 2 liter soda bottle, let it sit so any solids or water got to the bottom, then draw off the top 3/4 of the bottle and ditch the rest.
 

petryshyn

Commander
Joined
Oct 3, 2001
Messages
2,851
Re: boat oil in lawn mowers

intrepid<br />15w30 that has been sheered (used) in an engine for 50 hours probably has the same viscosity as straight 20w. Mowers typically like straight 30w. 20w is too heavy for snow blowers. <br /><br />>Will it cause instant problems?....probably not. >Will it reduce engine life?....likely.<br />>Is the risk worth the savings?....no.<br /><br /> :)
 

MrBill

Senior Chief Petty Officer
Joined
Aug 4, 2002
Messages
710
Re: boat oil in lawn mowers

Small engines like those on most lawnmowers and snowblowers usually aren't equipped with oil filters, so introoducing 50 hour used oil exceeds the recommended age of lubricants. Frequent oil changes are necessary in small engines becuase no filtering mechanism is in place to remove contaminants. An oil change for the average 3.5HP mower cost about a buck.....use a new quart. I don't know about you, but if my small engine power equipment failed because I missed a once-a-year oil change or could have saved it for another season for a buck....I'd be steamed.
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: boat oil in lawn mowers

Were talking a pint of oil what is that for quality oil on sale maybe 80 cents or a dollar.<br /> For a season of running.I could see it maybe to reduce recycling but lets see thats something<br />like 10 years for one boat oil change.Or one pint<br /> a year saved from recycleing.???or 80 cents saved<br /> a year??
 
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