Total Quartz 9000 Future vs Total Quartz 7000 Future XT

Both these oils are fully synthetic. Total Quartz 9000 Future is used for only gasoline-supported engines while Total Quartz 7000 Future XT works for both gasoline and diesel engines. 9000 center of focus is generally sludge cleaning, while 7000 mainly emphasizes protection against engine wearing.

9000 provides more efficient catalytic converter performance due to its low ZDDP ash build-up. Higher concentrations of detergents assist the oil to provide improved cleaning against the problem of sludge formation. Its performance at medium and high temperatures is also very commendable. A decent amount of phosphorus and zinc compounds as anti-wearing agents in the oil assists it to provide compatible wearing resistance.

Anti-wearing additives are present in higher numbers in 7000 to provide high protection against the wear and tear of the engine. The oil protects itself from early and rapid burning because of its higher flashpoint. Higher viscosity index does not allow it to change its kinematic viscosity when the temperature rises. It is also well known for providing good cold startups. Its higher TBN allows longer oil change intervals.

SpecificationsTotal Quartz 9000 FutureTotal Quartz 7000 Future XT
Oil TypeFully SyntheticFully Synthetic
Engine TypeGasolineGasoline / Diesel
Available viscosity grades0W-20, 0W-30, 0W-40, 5W-30, 5W-40, 10W-30, 10W-405W-20, 5W-30, 10W-30
Cost (4 L)8.40 $16.01 $
Oil change frequency (miles)6,000-7,0007,000-10,000
AdditivesAnti-wears, Anti-oxidants, Detergents, DispersantsAnti-wears, Detergents, Dispersants

Comparison of Engine Wear-off Protection

Sliding of metal parts of the engine over one another causes wearing due to friction. Engine oil uses particular additives known as anti-wearing agents to tackle this problem. The function of these additives is to form a thin film around these metal parts to provide smooth working of these parts. Higher concentrations of these additives will provide better resistance against wear and tear.

9000 because of its relatively lower accumulations of these anti-wearing agents produces more friction. So, this oil is marginally behind its peer in terms of wearing resistance.

On the other hand, 7000 make firm layers around the metal parts of an engine to minimize its wearing. This is because of higher concentrations of these anti-wearing additives in the oil which provide better lubrication.

Viscosity Comparison

The opposition to the movement of fluid is referred to as kinematic viscosity. A greater kinematic viscosity of the oil will provide superior performance at exaggerated temperatures. Viscosity index is the ability of an oil to maintain its kinematic viscosity at elevated temperatures. A high viscosity index employs lower variation in the oil viscosity. Pour point of the oil decides its performance at cold startups. It is the minimum temperature beneath which the oil does not flow under gravity influence.

9000 has a comparatively high kinematic viscosity at medium temperature (40 o C). It continues its lead at high temperature as well (100 o C) thereby providing superior performances at both the respective temperatures. However, 7000 provides much stable kinematic viscosity when the temperature rises from 40o C to 100 o C due to its high viscosity index. It also has better startup at colder temperatures as the oil has a marginally lower pour point.

Contrasting oils (5W-30 Grade oils)Kinematic Viscosity at medium temperature (40 o C) (mm2/s)Kinematic Viscosity at high temperature (100 o C) (mm2/s)Viscosity index (VI)Pour point (o C)
Total Quartz 9000 Future62.910.5156-39
Total Quartz 7000 Future XT5510163-40

Comparing catalytic converter working

The ZDDP ash formed as a result of oil burning clogs catalytic converter. This clogging causes blockage in catalytic converter working, lowering its efficiency. Greater amounts of these ZDDP compounds (zinc and phosphorus) in the oil result in more ash production which further highly affects the converter performance. 

The testing depicted that 9000 provides a better catalytic converter performance due to its lower phosphorus and zinc quantities. The presence of these compounds in fewer numbers produces less amount of ash enabling a catalytic converter to perform efficiently.

7000 contains these ZDDP additives in higher amounts to lower the engine wearing but it results negatively in the working of the catalytic converter as more ash will plunge into it, hindering its usual working.

Comparing reduction of sludge formation

The oxidized oil comes in contact with dirt, moisture, or any other detritus to form a semi-solid black fluid known as sludge. This sludge can hamper the proper oil movement lowering engine performance. To tackle this situation, oil is equipped with special additives called detergents which effectively resist its build-up.

9000 contains calcium along with magnesium-based detergents in higher numbers to lower sludge problems, so it is better overall for removing the sludge.

The concentrations of these detergents in 7000 is slightly low. This results in more expansion of sludge making the oil second to that of its rival.

Comparing oil early burning protection

The lightweight particles present in the oil decide its volatility. At high temperatures, these particles will break down easily and quickly vaporize. The oil containing these particles in the majority numbers will be more volatile thereby providing lower protection against its pre-burning. A high flashpoint results in better shielding against oil quick burn-off.

9000 contain higher concentrations of these lighter molecules making the oil more volatile. This makes it reach its flashpoint at a relatively low temperature providing low guarding against its immature burning.

The lightweight molecules are present in lower numbers in 7000. It enables the oil to achieve its flashpoint at a comparatively high temperature, making it less volatile. So, this oil provides better protection against early burn-off.

Contrasting Oils (5W-30 Grade oils)Flashpoint (o C)
Total Quartz 9000 Future230
Total Quartz 7000 Future XT241

Comparison of oil changing frequency

The oil changing frequency depends on different factors like protection against pre-ignition of the oil and TBN. Total Base Number (TBN) is used to measure the base additives in the oil. The reason for their addition is to counterbalance the acid formations during combustion process. As time passes, the concentrations of these base additives gradually decreases. Therefore, a higher TBN oil will provide a longer oil exchanging duration compared to the opposite scenario.

9000 because of its lower TBN provides shorter oil change intervals. The oil is needed to be changed after covering a distance between 6,000 to 7,000 miles. On the other hand, 7000 has a higher TBN which allows a much longer oil drainage interval, after covering an interval of 7,000 to 10,000 miles.

Quick Summary

  • Both oils are fully synthetic in which 9000 is used for gasoline engines only while 7000 can be utilized for gasoline along with diesel engines.
  • 9000 has better performance of the catalytic converter due to its lower ash formation.
  • For cleaning sludge 9000 is better because of its high detergent concentration.
  • 7000 provides higher protection against early oil burn-off.
  • Anti-wearing additives are present in higher amounts in 7000 so it provides better protection against engine wearing.
  • Performance of 9000 at medium as well as at high temperatures is better due to its high kinematic viscosity.
  • 7000 experiences lower viscosity changes upon temperature rise due to its high viscosity index.
  • 7000 provides better cold startups.
  • The oil changing frequency of 7000 is lower because of its higher TBN
  • Total Quartz 9000 is cheaper compared to 7000 so it is more budget-friendly