Category Archives: JEEP


The amount of oil the provent collects will only be an average, it will vary between engines, mileage of engine, etc etc..

The biggest issue with a modern common rail diesel engine is not particularly CCV (Crank Case Ventilation) recirculation or EGR (Exhaust Gas Recirculation) its the combining of the two. The oily fumes of CCV and the dry exhaust soot mixing together that form a black sticky tar like product that collect in the intake, its the biggest cause of EGR, intake related faults, valve issues etc etc.

By isolating one or the other, using either method such as a provent or EGR blanking on upto early Euro 4 spec engines, or on later Euro 4 spec engines and Euro 5 doing EGR emulating or remapping to delete the EGR function is one of the biggest positive things that can be done.

Personally I tend to go with EGR blanking, deleting through remapping or emulating to be a better solution as it also removes the by product of exhaust gas being “re-used” in the combustion process, thus leading to cleaning more efficient combustion, which in theory should give more power, but more positive will give better fuel comsumption and a longer lasting engine, of course when combined with regular (10,000km) oil changes and air/fuel filter changes, again at that 10,000km service interval.

Just food for thought, nothing more.
A provent is one positive “mod” to do for very little cost.


The JK Wrangler is particularly sensitive to mis alignment, as in the wheels, A lot more sensative than a lot of other vehicles that I work on that one might perhaps think would be far more sensative than the truck like JK Wrangler, such as new Range Rovers etc etc. I resolve a lot more of this on the JK just by getting the wheel alignment done properly, as in it does need to be just about spot on.

The biggest cause has been when the vehicle has been somewhere and got “the big lift kit”, had “heavy duty u-buet” steering arms etc etc and large tyres, it seems most stuff up the adjustment when they do the alignment badly (well in Perth anyway).

While this doesnt help everyone, I use Bob Jane in Victoria Park (Perth W.A) and they never have an issue because its a “Jeep” or “Land Rover”.