Thread: CEM products : FTC and others

Originally Posted by josh.huber

The Sky is blue

No it's not...

I use the CEM products and my 3.6 tdv8 has nearly 300,000km, bought it at 230,000km.

I like their oil flush in particular. The oils stays clean for ages. Previously the oil would be black within 20km of a change.

I’ve been using a range of fuel treatments for ages. So haven’t noticed a massive change, as the motor has always run well.

Originally Posted by josh.huber

If your going down the FTC or anything you add to the fuel route, wax the rear of the car first. Makes it easier to clean.
Remembering the fuel circuit is separate from the air circuit.
Cleaning the fuel up will only help the exhaust side of the turbo system. Which is great, especially since that's where the vanes live.
Have you had the oil drain mod done?
Clean air filters keep turbos from sucking oil through the seals, and therefore adding oil to the inlet side.

The right oil level is key to. I only put in 5.6L in at a change, to much oil is way worse then not enough.

Turbo drain mod done
A dirty air filter traps more dirt than a clean one, (to a point of course) but new air filter at last service some 8000km ago.
Oil level is as per e-dip stick, scantool reports 5.3l not sure how accurate that is, but e-dipstick level is correct.

Originally Posted by Eric SDV6SE

A dirty air filter traps more dirt than a clean one, (to a point of course)

Well no. A dirty air filter always traps more dirt. The problem is when it’s dirty to the point it’s affecting flow and causing a pressure drop. Filtering is still amazing, but engine efficiency is suffering.

I guess you could argue that at that point of low flow it’s not trapping as it’s not flowing

Originally Posted by DiscoJeffster

Well no. A dirty air filter always traps more dirt. The problem is when it’s dirty to the point it’s affecting flow and causing a pressure drop. Filtering is still amazing, but engine efficiency is suffering.

I guess you could argue that at that point of low flow it’s not trapping as it’s not flowing

Hail Mary!!!! There is a God!! We agree!!!

"Discojeffster is correct 100%"

Filtration is measured on flow through a filter, unobstructed. That's what makes a good filter. Good air filters can be measured against cheap air filters by the beta ratio.


A dirty air filter simply holds bigger particles further away from the paper. This helps it clog even quicker. When truck drivers used to tell me this I had a brilliant flyer from Donaldson. It used to ask them not to change they're oil filters and fuel filters. Same principle different medium.
Dirty fuel filter chokes fuel system. Cavitation, wear. Overheating.
Dirty oil filter. Wear. Bypass valve open, so dirty oil, heat.

8000ks on an air filter is fine. Especially for a road driven vehicle.

Common misconception!

Just this once Josh.

Originally Posted by josh.huber

Hail Mary!!!! There is a God!! We agree!!!

"Discojeffster is correct 100%"

Filtration is measured on flow through a filter, unobstructed. That's what makes a good filter. Good air filters can be measured against cheap air filters by the beta ratio.


A dirty air filter simply holds bigger particles further away from the paper. This helps it clog even quicker. When truck drivers used to tell me this I had a brilliant flyer from Donaldson. It used to ask them not to change they're oil filters and fuel filters. Same principle different medium.
Dirty fuel filter chokes fuel system. Cavitation, wear. Overheating.
Dirty oil filter. Wear. Bypass valve open, so dirty oil, heat.

8000ks on an air filter is fine. Especially for a road driven vehicle.

Common misconception!

Surely in pure city driving with the occasional tap out a year or even two is an easy stretch for such a large filter as the D3? I’m a service nut but I’ve never ever sensed even the slightest restriction or black smoking from a filter. Even after prolonged dusty driving.