Can You Put Too Much Bar Oil In a Chainsaw? Technically speaking, you can't put too much bar oil into the bar oil tank of your chainsaw (unless it's overflowing, which would not be good). What's important is that too much oil is not being used by the chainsaw on the bar and chain.
In all but very exceptional cases there is nothing wrong with the chainsaw and what appears to be an oil leak is simply oil that has sprayed from the chain as it rotates at high speed, draining from the saw body and guide bar.
In short, while 10W30 might help in a pinch, it's not tailored for the high-friction environment of chainsaw operation and can compromise both the efficiency and longevity of your tool.
Relative to bar oil, I have known users to use substitutes (such as SAE30) without consequence for limited periods when the recommended product is not available. However, I would frequently check the oil level when doing such a substitution. If you're talking about using it for chain and bar oil sure.
You may be able to thin your bar and chain oil with a little kerosene or diesel fuel. The mix should be about 5 to 10 percent diesel or kerosene and the remainder bar oil.
You should not use WD-40 as a chainsaw bar lubricant, as the primary use of WD-40 is as a solvent or to dissolve rust. As a substance, WD-40 is not thick enough to stick to the chain bar during operation, and would not be suitable as a chainsaw lubricant. See this guide on the best chainsaw oils.
To avoid your chainsaw from leaking oil whist in storage, the best solution is to drain the chainsaw of its bar oil and fuel mix and store the chainsaw empty.
It's better to worry about chainsaw oil running out rather than it going bad or going bad. Most chainsaw oils have a lifespan of 4-6 years depending on how you store them. Also, chainsaw oil doesn't go bad or off. In addition, some oils keep well in cold weather or at low temperatures.
Introduction: My name is Greg O'Connell, I am a delightful, colorful, talented, kind, lively, modern, tender person who loves writing and wants to share my knowledge and understanding with you.
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