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2 stroke oil question
Turpin	#1  Posted on 07/22/13 - 8:24 PM
Member Personal Page Project Albums Posts: 434 Comments: 20 Joined: 07/04/08	I have switch 2 stroke oils going from penzoil to Evinrude. I use 50:1 mix for my 1992 Evinrude 50hp. I have noticed the motor smokes less at start up but the remarkable thing is, my previous WTO was about 5400k +- 100 now it is constantly 5800k. So the question, is it the fact this oil is cleaner and more efficient burning causing the engine to run faster? I'm assume this is a DUH, question so I would like to know has anyone else ever notice such a drastic difference? It was almost equivalent to changing props. 1963 13' Sport 50hp Evinrude Maintaining a level of sanity that is socially acceptable
Tom Hemphill	#2  Posted on 07/23/13 - 4:03 AM
Member Personal Page Posts: 136 Comments: 1 Joined: 01/19/08	Did you change from traditional oil to synthetic?
dauntless-n-miami	#3  Posted on 07/23/13 - 8:33 AM
Member Personal Page Project Albums Posts: 315 Comments: 0 Joined: 11/05/08	Hello Turpin, that's a respectable rpm jump just by swapping 2 stroke oil brands. Just for the sake of your outboard check the condition of your spark plugs for a possible "lean situation". If they have been in for a while it may be hard to tell due to the oil/carbon build-up. Maybe test with a fresh set of plugs on your next outing while using this new brand of 2 stroke oil. Some 2 stroke oil blends (especially synthetics) can do strange things to an older motor so be cautious. 2 stroke's have a tendency to "rev-up" if they develop a lean condition and will run hotter as well. Just recalling past experiences with 2 stroke hobbies. 1996 Dauntless 15, Sportsman Pkg. - 2007 Yamaha 90 HP 2-Stroke
Turpin	#4  Posted on 07/23/13 - 9:09 AM
Member Personal Page Project Albums Posts: 434 Comments: 20 Joined: 07/04/08	Yes, it is a synthetic, I'm typically also against running synthetic in older engines also but hadn't given it much thought with 2 stoke oil on a boat. I'm cautiously optimistic. I will check plugs. 1963 13' Sport 50hp Evinrude Maintaining a level of sanity that is socially acceptable
whalerman	#5  Posted on 07/23/13 - 9:40 AM
Member Posts: 540 Comments: 5 Joined: 06/26/07	Which Evinrude oil did you switch to. THOM : 1999 Outrage 18, 2012 E-TEC 150, 2012 EZ Loader trailer
Turpin	#6  Posted on 07/23/13 - 1:52 PM
Member Personal Page Project Albums Posts: 434 Comments: 20 Joined: 07/04/08	Evinrude Super Premium synthetic (i can't help but laugh at the name)Actually it wasn't my 1st choice, but I was in a bind and my dad had a unopened gallon to lend. I was going to go with the (I think) XD- line. 1963 13' Sport 50hp Evinrude Maintaining a level of sanity that is socially acceptable
dauntless-n-miami	#7  Posted on 07/23/13 - 2:22 PM
Member Personal Page Project Albums Posts: 315 Comments: 0 Joined: 11/05/08	Synthetics oils (2 stroke or motor oil) are excellent products. The issue with them and older motors that have been accustomed to "dino" type oils is, their incredible ability to clean or loosen carbon deposites that have accumulated throughout the intake and exhaust areas of some motors. This also includes older 4 stroke vehicles and motor oil. The synthetic blend you are using might be wiping off or dissolving the old oil film that the piston rings and cylinder walls have grown fond of thanks to the older technology 2 stroke oils you and a previous owner may have used. For this reason I thought of a "Lean Condition" for the jump in rev's. Angel M. 1996 Dauntless 15, Sportsman Pkg. - 2007 Yamaha 90 HP 2-Stroke
Derwd24	#8  Posted on 07/23/13 - 2:43 PM
Member Posts: 1607 Comments: 9 Joined: 05/09/07	What component of the synthetic oil is responsible for the cleaning aspect? Dave - 1983 Outrage 22
Joe Kriz	#9  Posted on 07/23/13 - 2:57 PM
Site Owner Personal Page Personal Album Photo Albums Project Albums Posts: 11447 Comments: 452 Joined: 03/18/05	I only see these 2 Stroke Oils on Evinrudes website: http://shop.evinrude.com/products/343...4/2-stroke 1. XD-30 2. XD-50 (synthetic blend) 3. XD-100 (100% synthetic)
Turpin	#10  Posted on 07/23/13 - 3:48 PM
Member Personal Page Project Albums Posts: 434 Comments: 20 Joined: 07/04/08	Part # 767003 1963 13' Sport 50hp Evinrude Maintaining a level of sanity that is socially acceptable
whalerman	#11  Posted on 07/23/13 - 4:54 PM
Member Posts: 540 Comments: 5 Joined: 06/26/07	For an engine of that vintage I would use the XD50 oil. Less expensive than the XD100 which your engine would not benefit from as the hours of operation and wear that has already taken place on the crank and rod bearings. IMO. THOM : 1999 Outrage 18, 2012 E-TEC 150, 2012 EZ Loader trailer
Joe Kriz	#12  Posted on 07/23/13 - 5:08 PM
Site Owner Personal Page Personal Album Photo Albums Project Albums Posts: 11447 Comments: 452 Joined: 03/18/05	Turpin, That doesn't tell me much nor tell me where to go. I gave you the Evinrude link and nothing is there except XD Oil. I agree with Thom. XD-50 is all you need if you want a little better then the XD-30
tmann45	#13  Posted on 07/23/13 - 5:39 PM
Member Posts: 196 Comments: 0 Joined: 02/18/07	Google can find just about anything: http://www.walmart.com/ip/Evinrude-Jo...n/24091064
Turpin	#14  Posted on 07/23/13 - 7:57 PM
Member Personal Page Project Albums Posts: 434 Comments: 20 Joined: 07/04/08	I appreciate all Inputs and apologize for the lack of a proper link but I'm doing this inquiry from a phone (a proper pc is not available at the moment) and everything wants to give mobile-phone hyper links. I was mostly just curious was this rpm increase customary with the use of better more efficient oils. 1963 13' Sport 50hp Evinrude Maintaining a level of sanity that is socially acceptable
CES	#15  Posted on 07/24/13 - 6:11 AM
Member Personal Page Photo Albums Project Albums Posts: 2681 Comments: 7 Joined: 04/27/07	Motors always seem to run their best.....just before they blow up. Just sayin'...... Cliff 1966 13' Sport with a 1993 40hp Yamaha 2 Smoker
dauntless-n-miami	#16  Posted on 07/24/13 - 7:13 AM
Member Personal Page Project Albums Posts: 315 Comments: 0 Joined: 11/05/08	In replying to Derwd24, I am more familiar with automotive pure synthetics but I would figure 2 stroke synthetics if 100% would share similar qualities. Unlike conventional "Dino" oils, engineered synthetics benefit from higher resistance to thermal breakdown, inproved lubricity and superior detergent additives for the dispersal of contaminents. Thus the reason engines on synthetics have extended oil change service intervals. Synthetics also have a bit different viscosity rating than conventional oils do which will also cause issues in older motors. Motors that have been designed to run on "Dino" oils will accumulate over time carbon deposites, some slug and thicker oil films on cylinder sleeves, piston rings, crank bearing and the likes. The bulk of the recipocating parts. Synthetics will have a tendency (because of their design) to breakdown these accumulations within a motor and in some instances a motor with high op. mileage or hours that ran well on coventional oil now begins to smoke a bit and "burn" oil as some say. In other instances they exhibit lower compression test results because the thicker oil film that helped the piston rings seal to the cylinder wall is no longer there. It's not that the motor has gone bad but, the synthetics have begun to (let's say) de-contaminate the internals. I would suspect that 2 stroke pure synthetic oils would share very similar properties as their automotive brother does. Turpin mentioned using a pure synthetic by chance if I recall. Just my thoughts on the topic... Angel M. Edited by dauntless-n-miami on 07/24/13 - 7:23 AM 1996 Dauntless 15, Sportsman Pkg. - 2007 Yamaha 90 HP 2-Stroke
seahorse	#17  Posted on 07/24/13 - 7:24 AM
Member Posts: 103 Comments: 0 Joined: 05/21/06	That Johnson-Evinrude oil sold at WalMart and other outlets is a different oil than the XD series that an authorized dealer sells. This is a less expensive oil that is marketed for mass merchandisers, and is not the same nor does it even smell the same as the dealer stocked lubricants.
whalerman	#18  Posted on 07/24/13 - 7:42 AM
Member Posts: 540 Comments: 5 Joined: 06/26/07	To really see if there is a difference in rpm you will have to run the boat again to see if it were an anomaly in the readings. Sorta like doing speed trails to cancel out wind and current. But it is possible to have an rpm increase. Seahorse is very correct about the walmart oil and you should stay away from it, IMO. THOM : 1999 Outrage 18, 2012 E-TEC 150, 2012 EZ Loader trailer
Can_38	#19  Posted on 07/24/13 - 8:21 AM
Member Personal Page Posts: 45 Comments: 0 Joined: 03/24/13	Turpin wrote: I appreciate all Inputs and apologize for the lack of a proper link but I'm doing this inquiry from a phone (a proper pc is not available at the moment) and everything wants to give mobile-phone hyper links. I was mostly just curious was this rpm increase customary with the use of better more efficient oils. My experience here is if you don't provide all information and type it exactly to a specific format you will get more questions in return than helpful answers.... just my $0.02.
Turpin	#20  Posted on 07/25/13 - 9:17 AM
Member Personal Page Project Albums Posts: 434 Comments: 20 Joined: 07/04/08	Well I did testing this morning as I still had old mix in my 3.5gal "o'crap" reserve tank tank. It appears my loads must have been different, the original 400rpm was as most suspected in accurate. The actual difference is negligible but doing my testing I did manage to consistently hit a hair raising 43mph and once 44mph. So I apologize and thank everyone for their input. 1963 13' Sport 50hp Evinrude Maintaining a level of sanity that is socially acceptable