| Symptom or Application |
Recommendation |
|
Noisy valve lifters |
Change oil and filter and add Nulon Lifter-Free and Tune-Up
(Part No. LFTU) |
|
Engine making tak, tack, ticking, knocking noise |
Change oil and filter and add Nulon Lifter-Free and Tune-Up
(Part No. LFTU) |
|
Exhaust smoke on start-up (blue / grey colour) |
Usually caused by hardened and worn valve stem seals. Treat
with Nulon ESL |
|
If smoke is excessive |
Use Nulon SS500 in petrol and diesel engines (SS500 can be
combined with HP or E10) |
|
Glazed bores in diesel engines |
Treat with Nulon HP at double the recommended treatment |
|
Dirty oil and sludge formation inside the rocker cover |
Flush with Nulon EOF and change oil and filter (consider changing
the oil more frequently) |
|
General mechanical engine noise, e.g. bearings, pistons, timing
chain, gudgeon pins etc. |
Diesel engines - treat with HP
Petrol engines - treat with E10 |
|
If noise is excessive |
Use SS500 in diesel and petrol engines |
|
Engine detonates (pings) particularly under load
Note: All of the recommendations at right are based on the
assumption that the engine is tuned correctly and within
manufacturer's specifications.
|
Petrol engines using ULP fuel - treat with Nulon OBC.
If problem persists after consuming the treated fuel then
use Nulon PSO
High Performance and modified petrol engines that require
higher than 95 RON PULP - use Nulon PSO regularly
For older vehicles using leaded fuel, use PSO on a regular
basis. It may be advisable to retard the initial ignition
timing slightly as the original timing specifications set
for vehicles designed for 97 RON leaded fuel are no longer
valid
|
|
Black or dark brown exhaust smoke |
Refer to fuel "systems" |
|
High performance or modified petrol engines, LP gas and rotary
engines |
Use Nulon E20 with each oil change for maximum protection
against wear |
|
Petrol engines in sound / good condition and used for typical
day-to-day driving |
Use Nulon E30 Long Term Engine Treatment for cost effective
wear protection |
|
Worn petrol engine protection |
Use Nulon E10 each oil change |
|
Diesel engine protection |
Use Nulon HP in all diesel engines regardless of age or condition
unless the engine suffers from a symptom found elsewhere in
this chart |
|
Symptom or Application |
Recommendation |
|
Corrosion protection (including rust) |
Follow manufacturer's recommendations:
If manufacturer specifies a quality corrosion inhibitor,
use Nulon R45
If manufacturer recommends Anti-Freeze/Anti-Boil, then
use one of Nulon's quality Long Life coolants in accordance
with the directions
|
|
If vehicle is to be operated in sub-zero temperatures |
Use one of Nulon's Long Life Coolants in accordance with the
directions |
|
Engine overheats |
If a cooling system is in good operating condition it should
not overheat. The only course of action is to have the cause
diagnosed and rectified |
|
Cooling system is contaminated or dirty |
Use Nulon R40. Use as recommended when coolant is changed |
|
Leaks |
Leaks anywhere in a cooling system (except for hoses) should
be treated with Nulon R50. Obviously it will not be effective
on severe leaks. Remember that R50 is a temporary repair only
to be used in emergencies |
| Symptom
or Application |
Recommendation |
|
Protection of all gearboxes (helical, spur or worm drive)
and differentials whether automotive, trucking, marine or
industrial. (Does not include automatic transmissions) |
Use Nulon G70. This product has been proven to reduce wear
by at least 50% in numerous tests |
Difficult to change gears
|
Use Nulon G70. (Note: It is important to use the correct viscosity
gear oil as specified by the manufacturer. Using something
different can dramatically affect the quality of gear changes) |
|
Difficult to change gears on cold mornings |
Use Nulon G70 |
|
Gear noise (gearbox or differential) |
Use Nulon G70 |
|
Bearing noise (gearbox or differential) |
Use Nulon G70 |
|
Oil seal leaks in either gearbox or differential |
Use Nulon ESL at 60ml per litre of oil |
| Symptom or Application |
Recommendation |
|
Black exhaust smoke which is caused by over fuelling |
Use Nulon DIC. If smoke is not reduced after treating two
full tanks it will be necessary to have the pump and/or the
injectors serviced |
|
Waxing (in cold climates). Usually this problem is experienced
when there is an unexpected cold snap at the beginning of
winter and engines are still being run on summer grade fuel.
This problem can be overcome by adding heating oil to the
diesel or petrol at 10% |
Use Nulon DIC which will assist in maintaining the integrity
of the fuel |
|
Fuel system corrosion |
Use Nulon DIC which contains very effective corrosion inhibitors |
|
Fuel system protection |
Use Nulon DIC on a regular basis to maintain entire fuel system |
|
Fuel consumption |
Using Nulon DIC on a regular basis will preserve the efficiency
of the entire system. In most instances the cost of DIC will
be offset by fuel savings |
|
Algae in fuel |
Algae is identified as a stringy, sticky, black substance.
It is usually first detected when it blocks the fuel filter.
Algae only exists when there is water in the system. There
is no simple treatment and professional assistance should
be sought.
Call Nulon's technical department for advice on freecall 1800
679 922. |
