Introduction To Roth Automotive Science › Forums › Engine This forum has 26 topics, 24 replies, and was last updated 1 year, 10 months ago by theory816. Viewing 18 topics - 1 through 15 (of 29 total) 1 2 → Topic Voices Posts Last Post Why does engine oil turn black in service? Started by: admin 2 3 4 years, 11 months ago admin Why do we need catalytic converters? Started by: admin 1 1 5 years ago admin Lean- burn and other Future Engine Tech Started by: admin 1 1 5 years ago admin Inline 4 Turbo vs V6 vs V8 Started by: theory816 2 3 1 year, 10 months ago admin Engine combustion – What doesn’t burn? Started by: admin 1 1 2 years, 4 months ago admin Turbo vs N/A engine durability Started by: admin 2 3 2 years, 8 months ago admin knock conditions Started by: admin 1 1 2 years, 8 months ago admin Spark Plug technology: Platinum, Iridium, or Copper Spark Plugs? Started by: admin 2 3 3 years, 1 month ago admin Engine cooling systems – Why does my engine have a Dual poppet thermostat? Started by: admin 1 1 3 years, 2 months ago admin pre-cat failure Started by: admin 2 6 3 years, 6 months ago admin Do stop/start systems lead to increased bearing wear? Started by: admin 1 1 3 years, 9 months ago admin Any issues with using higher Octane gas than my engine requires? Started by: admin 2 6 3 years, 11 months ago admin Question about Engine build quality Started by: theory816 2 2 3 years, 12 months ago admin Source of Hydrocarbon emissions Started by: admin 1 1 4 years, 1 month ago admin Use of EGR in modern engines Started by: admin 1 1 4 years, 1 month ago admin Why do Exhausts sound like they do? Started by: admin 1 1 4 years, 5 months ago admin Can you run with insufficient Octane fuel? Started by: admin 1 1 4 years, 6 months ago admin Diesel Exhaust Aftertreatment Failures Started by: ton34 2 5 4 years, 7 months ago ton34 Viewing 18 topics - 1 through 15 (of 29 total) 1 2 → You must be logged in to create new topics. Log In Username: Password: Keep me signed in Log In