TL/DR:
- Overall more reasonable pollution
- Solid burner efficiency is now less terrible
- Diesel = best energy density
- Gas = lowest pollution
- Oil boilers are viable at scale (low pollution)
- Solid fuels have emission multipliers (higher tiers = lower emissions)
- Quality now affects temperature, pollution and efficiency

Long version:

• Fuel Values/Emissions:

  • Crude Oil 1.4 MJ -> 0.48 MJ / 1.4 -> 1.4
  • Light Oil 1.5 MJ -> 1.08 MJ / 1.2 -> 1.1
  • Heavy Oil 1.0 MJ -> 0.60 MJ / 1.3 -> 1.3
  • Petro Gas 1.5 MJ -> 0.90 MJ / 1.0 -> 0.45
  • Diesel 2.0 MJ -> 1.50 MJ / 0.8 -> 0.7

• Non-fluid Emissions (instead of 1.0):
  Wood 1.1, Coal 1.0, Solid fuel 0.9, Rocket fuel 0.8, Nuclear fuel 0.7

• Solid fuel fuel value 12 MJ -> 10.8 MJ
• Diesel fuel recipe now takes 10 Petroleum gas instead of 20

Entities:

• ... Small Burner:
  Efficiency: 25% -> 70%
  Emissions: 60/MW -> 22/MW
  Power: 0.5 MW -> 0.7 MW

• ... Big Burner:
  Efficiency: 50% -> 80%
  Emissions: 20/MW -> 18/MW

• ... Diesel Generator:
  Efficiency: 100% -> 85%
  Emissions: 12.5/MW -> 8.25/MW (multiplied with fuel emissions)
  4 MW Power only with Diesel fuel, less dense fuel types = less power and emissions

• ... Oil Boiler:
  Still 100% efficiency
  Emissions: 7.4/MW -> 3.7/MW (multiplied with fuel emissions)
  Now only needs 2 steam engines or 1 steam turbine instead of +1 each (165 -> 240° temperature)

• ... Steam Engine:
  Now accepts 240° hot steam instead of 165. With vanilla boilers it may not appear saturated because those only produce 165° hot steam, but they still produce the same with them

• ... Other Changes:

  • Optional: Disabled wind turbine (k2-wind-turbine looks better, or my "windturbines" mod is more realistic. pick one of those)
  • Optional: Burner Cars and tanks and hovercrafts pollute 1/20000 of their base fuel consumption per minute. 600kW -> 30 pollution/min for example (tank)
  • Optional: Trains (seperate setting) pollute 25 per minute (15 for diesel trains if that mod ever gets updated)
  • Pollution stays the same on higher quality machines with higher power output
  • Fuel efficiency increases by 15% per quality level
  • On vanilla boilers and oil boilers, increases the target temperature by 30% per quality level (requires steam turbines to take advantage of the increased power output)

Example calculations:

• Vanilla boiler (unchanged)
  provides 1.8 MW for 1.8 MW fuel consumption. Pollution: 16.66/MW

• Big burner
  provides 50 MW for 62.5 MW fuel consumption. Pollution = 18/MW

• Burner
  provides 0.7 MW for 1 MW fuel consumption. Pollution = 22/MW

• Diesel Generator
  Light Oil: 2.9 MW for 3.13 fluid/s. Pollution: 9.1/MW
  Diesel: 4 MW for 3.13 fluid/s. Pollution: 5.82/MW
  Gas: 2.4 MW for 3.13 fluid/s. Pollution: 3.75/MW

• Oil Boiler:
  Light Oil: 2.7 MW for 2.5 fluid/s. Pollution: 4.07/MW
  Diesel: 2.7 MW for 1.8 fluid/s. Pollution: 2.58/MW
  Gas: 2.7 MW for 3 fluid/s. Pollution: 1.66/MW

Since 2.0, i've invested an unreasonable amount of time in my mods again. (plus over 2000 hours before)
If you can afford it, a donation on https://www.patreon.com/c/OwnlyMods would be very appreciated

My mods:
Combat:
- Turret Shields
- Blood & Gore
- Raven mk2
- Shield FX
- Laser Tanks
- Laser Rifle
- Weapon Quality
- Universal Turret
- Bullet Tracers (Ownly's)
- Hovercrafts (collab)
- Glowing Laser Beams -> Updated version by Pikachar
- RPG Items -> Updated version by ZwerOxotnik
- Spell Pack -> Updated version by ZwerOxotnik

Basing:
- Wind Turbines
- Vehicle Physics
- Heat Glow
- Compact Power Reloaded
- Smaller Train Stop Collision
- KS Power Rebalancing
- HD planets
- Chemflip for 2.0
- Logistic Group Editor
- Modding Tools/Cheat menu
- Overloaded Trains -> Updated version by ptx0

Deprecated:
Combat:
- Railgun Revival
- Desert Eagle
- Wave Defense Unlimited
- DotA

Basing:
- Realistic Reactors (collab)
- Realistic Reactors - Utilities
- Resource Spawning Ingame
- Transformers
- Speaker Signals Expansion
- Solar Panel Equipment
- 0.16 Graphics
- Unlushed Trees
- Bleached Trees
- Copy&Paste for 0.16
- Lua Combinator 2
- Lua Combinator 3
- Fire Department
- Robot Tree Farm
- Modder's Science Pack
- Assembling Machine Equipment
- Bottled Science
- Market
- Market - AutoBuy