Deano’s Diesels Environmental Standards

All work carried out by Deano’s Diesels will adhere to current environmental laws and beyond.

All waste oils will be collected by registered waste oil recyclers/handlers to EPA standards.

All spills will be contained with approved oil absorption pads and be placed in the waste filter pick up drums to be disposed of in a way to reduce damage to the local environment.


All coolant will be collected in plastic drums and be sent to council approved chemical waste stations.

Measures will be taken to reduce any possible spills.

Where there is risk to local flora and fauna the EPA will be notified.

Where personal injury is a concern fire, rescue, or the roads maritime will be notified ASAP of the concern.

Waste metals and batteries will be stored and collected by AB Scrap Metals every 4-6 months

All oils will be from steel 205/8 litre drums where possible and decanted into plastic drums.

Personal expectations require high levels of waste reduction and reducing plastic waste is a high priority

Sprinter 906 OM651.955 non gen oil filter found 3 old filter parts and various shit in filter customer just purchased had service done at a Branded Service Center in Newcastle suburbs

.  Same model Sprinter 906 316cdi went to old mates with a oil leak, yes we fixed it... 3 months later still leaking, told them to go back and get old mate to fix it. Still leaking 9+ months later.

Customer has shits with old mate, no one is perfect but they wipe hands of it, with the old 3 month I.D.G.A.F warranty rule, it was a while ago, what did I do, have you an invoice are you sure I did this work.

Customer has issues with Alternator giving out erratic fault codes low voltages etc. Fed up with new guy (again) who is cheaper on paper they call us again, so we supply and fit a OEM Alternator but notice a water pump leak and huge oil leak.(not always leaking though)

We pull a bit of shit off, looks like a oil sensor leak, but  after replacing still leaking, Never had a oil leak like this before. It would leak at start up but once turned off and restarted it would stop leaking for a period, sit for a day and run out like a tap.

Unfortunately for my customer I had to put them off the road as serious damage was likely if it kept losing this amount oil. Ended up letting it sit a whole day and stripped the engine bay clear of all a/c  power steering pumps and other accessories so to give  a clearer picture  of where this leak was. run it for 2 minutes or so with no belts etc, found the area involved and started stripping back to the block.

Looks like old mate decided that he could squeeze a tube of sillastic in the oil galleries and miracles will occur ,  they skipped O-ring Training day,  that flapping sillastic shown in picture was the tap turning on and off  it would sometimes seal and other times be the path of least resistance.

Not sure if they put new o-rings in or just did the sillasitc trick. Probably would last 3 months.

Unlike some situations where a dob of FIPG formed in place gasket material is clamped between 2 solid surfaces and held in place  by bolts or nuts,  this situation has a o-ring located in a groove on a  plastic tube coming from the oil filter housing that inserts into the hollow section of the alloy cooler and steel section of engine block, thus 3 different material needs a flexible seal.

This job was done at least 2 times but who really knows, old mates invoices were vague poor job descriptions lacking any real evidence of the work carried out.

All up this poor customer was out of pocket close to $2500 but unknown to me they were using liters of oil a month.

We repaired the leak using genuine Mercedes-Benz parts, replaced the oil filter housing/oil cooler assembly as a precaution $500 odd bucks as it was pulled apart and they are known to leak internally.

This customer is a caring group of people with a small fleet of buses with no real idea of mechanical knowledge and old mate has used and abused there naivety and trust, 

Old mate should of fixed the issue at first instance re-investigated why, out sourced the job to a better/more knowledgeable mechanic and stop passing the buck. and kicked the arse of the tech doing the job. (thats what they call the new bread)

engine work

semi trailer repairs B double Jaltest Logodownload castrol image



Deano's Diesels is a small business committed to the repair and maintenance of heavy vehicles.

We are 100% mobile with almost all the gear to get you back on the road.

Est. in 2011. I wanted to provide a service for owners of trucks in East Lake Macquarie to have there vehicles maintained by a qualified heavy vehicle mechanic. I could see there was no dedicated licensed business in this area servicing heavy vehicles at that time, so that's roughly how it started.

It also allows me be a little flexible with the time I spend with the family.


We repair most makes and models of trucks including American, Jap, European.

We have up to date Jaltest computer software that provides communication with the latest models of truck, bus and light commercial vehicles. It covers the majority of USA, JAP, EURO trucks, Cummins, Detroit, Caterpillar, Benz ..... Jaltest was mostly European but it has now entered the american market and is a good all round diagnostic tool. 

I've 20 odd years in fleet maintenance, covering lots of different machines from the humble VICTA, Lift Trucks, excavators, wheel loaders, rubbish compactor units, VAC trucks, cranes,  trucks, Frannas, Earthmoving....

We do onsite suspension work, brake repairs, engine repairs, air leaks, PTO Repairs, Basic Hydraulics, replacing Diffs, fuel pump installs, Basic electrical work, Clutch adjustments, Service work, Vehicle inspections (not RTA defect clearance as RTA won't let mobile workshops clear).

We have a competitive fixed hourly rate for day work and night work.

After hours breakdown is available (rates apply). 0437425407

We service South from Mt White, Central Coast. North to Buludelah.  West to Broke Cessnock.


Dean Porteous


Email. This email address is being protected from spambots. You need JavaScript enabled to view it.

39 Dudley Road Charlestown NSW 2290

Time on the road.

IMG 2026 emergency repairs

The time spent on the road with wheels turning is your key to success.
We try to be flexible with hours of operation.


We do planned service work and repairs at night so you are back in business for next day 
Of course they is a little extra charge over the normal rate but in real terms you are saving time.
While you sleep a qualified experienced truck mechanic is at work.
Emergency Repairs
Emergency repairs, quite often we need a repair to get the job done a part maybe weeks away or no wreckers have the part.
Many dealerships and workshops will put you off the road till they get the part.
Sometimes a bit of weld, 50 cable ties or a bypass wire can get us through till the correct part arrives.
As long it safe to get through the day we try to keep
 you on the road.