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Question about petrol/gasoline engine oils

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tautech:

--- 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 ?

joeqsmith:
For the most part I use full synthetic in all of my 4 stroke gasoline engines.   Even the small engines like my generator and such get it.  I think the generator requires changes after 50hours of operation?

I used to run methanol in one engine which required an expensive special oil along with a top end oil additive blended into the fuel.   Methanol is fun.  When I switched back to gasoline, I was using a cheap grade non-synthetic.   The oil is changed after only few miles of use anyway.  The problem was the formula changed over time due to ever changing emissions laws and I switched to a race only semi-synthetic that was better suited. 

Tomorokoshi:
1. Use only RoHS motor oil.
2. Clip a ferrite on the fuel line.
3. Buy only from a reputable source, not ebay, etc.
4. Use lead-free fuel.

tautech:

--- Quote from: joeqsmith on August 16, 2023, 08:13:24 pm ---For the most part I use full synthetic in all of my 4 stroke gasoline engines.   Even the small engines like my generator and such get it.  I think the generator requires changes after 5 hours of operation?

--- End quote ---
What brand would that be ?
Even decades old Briggs & Stratton engines only required 40hr changes.

Benta:

--- Quote from: tautech on August 16, 2023, 09:09:00 pm ---Even decades old Briggs & Stratton engines only required 40hr changes.

--- End quote ---
Are you guys kidding me? 5 hrs, 40 hrs oil change intervals???
What kind of miserable engines are these?

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