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[1974D2004X4]

The issue with the extractors is that the filter in the pan doesn't get changed. I usually dropped the pan and replaced the filter and refilled the oil that I was able to drain. Typically, you only got about 1/3 of the fluid out with dropping the pan so really sweetening versus a wholesale change. I certainly don't miss DIY AT fluid and filter changes. Something I will never need to do on my Slate.

Good point, change the transmission filter at about 30,000 miles if able to be changed, then the extractor technique before that change if needed and after is acceptable. The filters for transmissions generally are ; "screen door on submarine level " so not a real factor. Hydraulic filters on IC engines are not much better so think of filters as insurance not cleaners. Catches big junk, but hydraulic or liquid filters are most efficient in the early use time frame, longer drains, longer use they lose efficiency and if they don't have capacity and life they will drop out trash and/or bypass.

 

[AZFox]

As a retired and demented 50 year oil analysis company owner and Cummins R&D tribologist your comments are very interesting. Did you learn tribology from testing yourself or reading on Internet. DYSONANALYSIS ring any bells? Cheers, TD

If you can read you can learn practically anything.

I learned about tribology long before Lake Speed, Jr. came along. People have it easy now.

Not saying it's time to shred the Library Card, though.

FWIW, engine oil is made from one or more base stocks plus an additive package. A lot of attention gets paid to the base stock (mineral stock, semi-synth, full synth) but IMHO the best oils are the ones with the best additive packages. There are lots of additives!

• Friction modifiers
• Anti-wear additives
• Extreme pressure (EP) additives
• Rust and corrosion inhibitors
• Anti-oxidants
• Detergents
• Dispersants
• Pour point depressants
• Viscosity index improvers
• Anti-foaming agents

It's fascinating stuff to learn about.

Engine break-in is another Fun Topic that involves tribology.

 

[1974D2004X4]

If you can read you can learn practically anything.

I learned about tribology long before Lake Speed, Jr. came along. People have it easy now.

Not saying it's time to shred the Library Card, though.

FWIW, engine oil is made from one or more base stocks plus an additive package. A lot of attention gets paid to the base stock (mineral stock, semi-synth, full synth) but IMHO the best oils are the ones with the best additive packages. There are lots of additives!

• Friction modifiers
• Anti-wear additives
• Extreme pressure (EP) additives
• Rust and corrosion inhibitors
• Anti-oxidants
• Detergents
• Dispersants
• Pour point depressants
• Viscosity index improvers
• Anti-foaming agents

It's fascinating stuff to learn about.

Engine break-in is another Fun Topic that involves tribology.

I was doing Tribology before Lake Speed Jr was born. I worked with his Pop.