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| Question about petrol/gasoline engine oils |
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| tautech:
--- Quote from: joeqsmith on August 17, 2023, 07:30:35 am --- --- Quote from: tautech on August 17, 2023, 03:53:18 am --- --- Quote from: joeqsmith on August 17, 2023, 02:36:18 am --- --- Quote from: tautech on August 17, 2023, 01:04:30 am --- --- Quote from: joeqsmith on August 16, 2023, 10:39:18 pm ---For the 2-strokes, I was using Yamalube but now Lucas goes in everything. When I was growing up riding dirt bikes, mostly I used Golden Spectro. --- End quote --- There are different lubrication requirements for 2 strokes if they are: Air cooled Water cooled Marine cooled. They each have a different lubrication spec for the heat ranges they operate within. Run any water cooled 2 stroke oil in an aircooled 2 stroke engine at your peril. --- End quote --- Water cooled leaf blower? Mower? Weed whacker? LOL!!! Dirt bikes in my day were Hodaka Ace Super Rat ... Water cooled wasn't a thing. As a matter of fact, I knew a guy who knew a guy who built and raced for Yamaha who made one of the first water cooled 2-strokes. Cutting edge stuff. --- End quote --- I listed all 3 as they are each distinctly different but in fact air cooled can be broken into 2 further categories, those that are wind cooled as a motorike is and fan cooled as portable 2 stroke tools are; chainsaws, trimmers, hedgecutters, concrete cutters etc. While lubricants to suit many 2 stroke types are available, none are expressly formulated for all. I use 2, air cooled and that recommend for outboards of which there are also premix and auto inject formulations. --- End quote --- I have not owned an air cooled 2-stroke bike in I would guess at least 40 years. --- End quote --- About then when I sold my last road bike, A Suzuki 250 GT X7 twin one of the last variants they produced after becoming the first 250cc production bike capable of 100mph. Had mine up there a few times. --- Quote ---We did have an old Detroit 2-stroke, supercharged + turbo. I doubt any of the oils your thinking of would have worked. --- End quote --- Of course not, that Detroit is a diesel and requires a high detergent diesel oil. --- Quote ---I used to play with model air plains when I was a kid. All of them were 2-stroke. One was a diesel. Guessing these would all be in their own distinct category as well but nothing that concerns me. --- End quote --- Typically they used Castor oils as a lubricant when I fiddled with such stuff too several decades ago. --- Quote ---Anything I own is fan cooled. All running the same oil. Guessing I have been using Lucas at least 10 years now. I'll let you know when one of my 2-strokes finally dies. The oldest one that gets any use is the mower. It's a good test case. --- End quote --- Then they'll all use a similarly rated oil albeit at different mix ratios however I try to simplify these using only a couple of mix ratios, 24:1 and 32:1 to cover an old 2 stroke mower, my big boy chainsaw (120cc) a trimmer, and 3 other saws. Please excuse Joe for going OT --- Quote ---Thinking of categories, how many does Siglent have for encoders? Do they offer higher grade for some equipment and lower grade for others, or is it a one size fits all and they are all poor? Seems I asked this before and you didn't respond. Had you told me the higher end arbs offered a working encoder, I would have pulled the trigger on one for home but with the lack of any feedback, I assumed they use the same poor part. Seems the advice was use the buttons. :palm: --- End quote --- It's not an encoder problem but a SW problem as the encoder polling on SDG models is too slow to combat Joe's high speed life. |
| tautech:
Joe, rather than run total loss combustion chamber lube in rotary engines, when racing 2 stroke oils are used as seen done here by my neighbor setting a NZ record a few years back. AFAIK it still stands today. |
| Halcyon:
--- Quote from: tautech on August 16, 2023, 08:35:08 am --- --- Quote from: Halcyon on August 14, 2023, 08:07:42 am ---Both my mower and line trimmer take the same oil, so it's easier just to keep a larger bottle on-hand. --- End quote --- How so ? If your trimmer a 4 stroke ? --- End quote --- Yep. Both Honda engines. Both take 10W-30 "high detergent" oil of API SJ grade or higher. So even a semi-synthetic should be fine for both purposes. I'm not buying two types of oil. The line trimmer manual specifically states in big bold text: "Using nondetergent oil or 2-stroke engine oil could shorten the engine's service life". |
| joeqsmith:
I had a one of the Suzuki GT ram air triples. My last air cooled 2-stroke was a Kaw triple 500 w/ expansion chambers. --- Quote ---Of course not, that Detroit is a diesel and requires a high detergent diesel oil. --- End quote --- Bigger difference, we are not blending oil into the fuel to act as a lubricant like all of my 2-strokes. --- Quote ---Typically they used Castor oils as a lubricant when I fiddled with such stuff too several decades ago. --- End quote --- I don't remember if I had to mix anything in that toy diesel or not. You had an adjustment for the CR and a way to add heat. I mix them the same, rich. I'll take smoke over a damaged engine any day. All of the ones I own use a carb. --- Quote ---It's not an encoder problem but a SW problem as the encoder polling on SDG models is too slow to combat Joe's high speed life. --- End quote --- And here I thought I was being slow with it. I wonder when they did the system design, did marketing, EE management or quality control think it was good enough. --- Quote ---my neighbor setting a NZ record a few years back --- End quote --- 8.66 @ 153 in what distance do you use over there? Been following a channel where they are attempting to reassemble a 12-rotor boat motor. It's the size of a big-block. There are videos of the owner/designer running it. |
| BrokenYugo:
I use cheap 15w40 turbodiesel oil for all air cooled stuff that only gets used above freezing, works great. |
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