プラグのオイル汚れの正体について考えた

It's a bit strange that oil gets on the threads.

An easy-to-understand explanation of the heat value and structure of spark plugs!
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An easy-to-understand explanation of the heat value and structure of spark plugs!

【整備士向け動画】エンジンコンディショナーをプラグホールから入れるならオーバーラップを狙え!
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【整備士向け動画】エンジンコンディショナーをプラグホールから入れるならオーバーラップを狙え!

Spark plug hole oil leak repair and cam holder O-ring replacement [E07Z] Honda [Acty HA7]
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Spark plug hole oil leak repair and cam holder O-ring replacement [E07Z] Honda [Acty HA7]

【偽物】ネットで偽物部品が横行している問題 と 部品の個体差(バラツキ)の考え方【ゆる談/GS-RADIO】
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【偽物】ネットで偽物部品が横行している問題 と 部品の個体差(バラツキ)の考え方【ゆる談/GS-RADIO】

Oil consumption [Dramatic improvement!] Piston ring sticking removal [POLO,GOLF, Audi TT, A4, etc..]
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Oil consumption [Dramatic improvement!] Piston ring sticking removal [POLO,GOLF, Audi TT, A4, etc..]

スパークプラグがオイルまみれ!!ホンダ ライフ 修理動画
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スパークプラグがオイルまみれ!!ホンダ ライフ 修理動画

Basics of Motorcycle Spark Plugs (2024): Replacement Times, Types, etc. Iridium Plugs
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Basics of Motorcycle Spark Plugs (2024): Replacement Times, Types, etc. Iridium Plugs

【原付乗り全員見て】不調原因ダントツ1位!【カーボン噛み】でエンジンがかからない原付の復旧に挑戦!
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【原付乗り全員見て】不調原因ダントツ1位!【カーボン噛み】でエンジンがかからない原付の復旧に挑戦!

[Oil No. 1 Showdown ②] "X" Oil's Horsepower is Seriously Excessive and Crazy
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[Oil No. 1 Showdown ②] "X" Oil's Horsepower is Seriously Excessive and Crazy

[Unknown cause] I saw hell while changing spark plugs...
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[Unknown cause] I saw hell while changing spark plugs...

[No. 46] Testing with a CB750four: Can additives alone fix oil leaks? Is it possible to cheaply f...
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[No. 46] Testing with a CB750four: Can additives alone fix oil leaks? Is it possible to cheaply f...

プラグを確認したらまっ黒だったのでキャブセッティング【モンキー+中華エンジン】
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プラグを確認したらまっ黒だったのでキャブセッティング【モンキー+中華エンジン】

[Spark plug replacement] I compared the tightening torque and angle before and after applying thr...
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[Spark plug replacement] I compared the tightening torque and angle before and after applying thr...

【なめたネジ】意外な方法で取れた!プロが教える激安ウラ技!
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【なめたネジ】意外な方法で取れた!プロが教える激安ウラ技!

グリス潤滑油の話【まーさんガレージ切り抜き】
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グリス潤滑油の話【まーさんガレージ切り抜き】

[The dark side of fake NGK plugs] The truth behind it has come to light. Learn about it and prote...
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[The dark side of fake NGK plugs] The truth behind it has come to light. Learn about it and prote...

バッテリー上がりの正しい対処法!3種類の音を聞き分ければ原因が分かる!
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バッテリー上がりの正しい対処法!3種類の音を聞き分ければ原因が分かる!

Invisible oil leak? Engine malfunction can also occur due to these reasons! Nissan Moco (MG22S) 2...
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Invisible oil leak? Engine malfunction can also occur due to these reasons! Nissan Moco (MG22S) 2...

【CB750four】何だかチョーシが良くないみたい…プラグを見ると真っ黒だ!さぁ、どうする?
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【CB750four】何だかチョーシが良くないみたい…プラグを見ると真っ黒だ!さぁ、どうする?

Oil was dripping and white smoke was coming out, so Mira Gino was revived before I could put in t...
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Oil was dripping and white smoke was coming out, so Mira Gino was revived before I could put in t...