Synfilm is available in the following ISO grades:
Synfilm ISO grade: 32 46 or 68 100 150 32 or 46
Equivalent SAE grade: SAE 10 SAE 20 SAE 30 SAE 40 Dexron

OIL CHANGE / PROCEDURES / CHECKLIST

Select Proper ISO Grade: Use ISO Viscosity Grade recommended by Air Compressor Manufacturer if known; or select proper Synfilm from the "ISO Viscosity Grade Selection Chart" on last page.

Drain Old Oil:
Clean Compressors will only require draining the reservoir from the lowest point in system when oil is hot. Oil coolers should be drained, if possible. If system can not be completely drained, then first oil change interval should be determined by oil analysis or a maximum of 2500 hours.
Dirty Compressors should be cleaned prior to installing Synfilm. Royal Purple recommends cleaning dirty compressors prior to changing to Synfilm by adding Royal Purple "Syn-Sol" Super Solvent Metallic Cleaner to the old oil just prior to draining. Add 5% Syn-Sol to the old oil; operate the compressor 48 hours; drain old oil. During cleaning, pressure differentials across oil filters should be watched very closely and filters changed as needed to prevent plugging. (CAUTION: Syn-Sol is a potent cleaner and will remove lacquer, varnish, sludge, paint and epoxy from internal compressor surfaces - Before using, consult Syn-Sol product sheet).

Synfilm will also clean deposits left by old oil over time, which may require shortening the 1st oil drain interval.

Fill: Fill to manufacturers recommended level (including oil coolers) by using dip stick, sight gauge, etc.

Start-Up: Start unit and check for oil leaks. Check air/oil separator pressure differential; also check pressure differential across oil filter.

Water Removal: Synfilm separates readily from water allowing water to settle to the bottom of the reservoir where it can be drained. Drain after a minimum of one hour settling - for best results drain each morning before start-up.

Oil Change: Synfilm should be changed every 8,000 hours or annually, unless contaminated or otherwise indicated by oil analysis. The first oil change may be shortened as Synfilm cleans up compressor deposits left from previous oils. Compressors operating in corrosive environments may also require drain intervals shorter than one year.

Separator Changes: In the event the air/oil separator is changed, Synfilm should also be changed.

GENERAL MAINTENANCE INFORMATION

Air/Oil Separator

Before Oil Change: Examine and change separator if:
1) there is a high pressure differential drop (5- 8 psi) across the separator
2) if separator is 7 months old or older
3) if required, separator should be changed before changing to Synfilm.

After Oil Change: * If separator has been in service for 6 months or less prior to oil change, the separator normally will not have to be changed until it has been in service a total of 10 to 12 months.

* At 6 psi, separator walls normally begin to soften due to excessive absorption of oil/water emulsion. Since Synfilm cleans deposits from dirty equipment, carbon residues may accumulate at separator, main line strainer (filter), and in the bearing filter. This may shorten the life of these filters until equipment is clean and once again operating at peak efficiency.

Oil Filter:
Rotary Screw Compressors: Synfilm's unique solvency not only cleans reservoir deposits but also cleans deposits in lines, coolers, etc. left by previously used oils. This requires a filter change each month for the first three months; thereafter, change filter every 1000 hours.
Reciprocating Compressors: Change per PM schedule.

Air Filter: Rotary screw air compressors ingest large quantities of air. Clean filters improve performance and keep the oil cleaner.

Seals: Synfilm is compatible with all seals keeping them soft and pliable. Seals should be changed if hard, cracked or brittle. In some compressors, changing to Synfilm will stop leaks.

Aftercoolers / Oil Coolers: The outside of the aftercooler piping should be cleaned at least once per month for maximum cooling efficiency. Coolers with a history of internal clogging should be flushed. When coolers are functioning properly, air discharge temperatures are approximately 100°F over ambient (usually 170 - 195°F). If discharge temperatures are high, clean the outside of the cooler . If they remain high, the inside of the oil cooler piping may be clogged with varnish, sludge, or gum or other deposits and can be removed while equipment is operating by adding Royal Purple "Syn-Sol" to oil. (Contact Royal Purple for more information)

Air / End: Check the amperage draw against the name plate electrical motor amperage on each leg at starter. If the air/end bearing is being lubricated properly, the amperage draw from all legs will be within a 1.15 service factor. If amperage on any leg has a higher value than a 1.15 service factor, check for bearing noise in the air/end, especially thrust bearings.

Leaks:
Oil Leaks - Locate and stop all oil leaks before changing to Synfilm for maximum cleanliness and economy. Any and all hydraulic hoses should be replaced.
Air Leaks- Synfilm's unique high film strength allows packing glands on reciprocating compressors to be tightened to eliminate air leaks, without increasing packing temperatures.

ISO VISCOSITY GRADE SELECTION CHART

Centrifugal Air Compressors

Manufacturer	ISO Grade
Ingersoll-Rand	Synfilm 32
Joy	Synfilm 46
Elliot	Synfilm 32
Atlas-Copco	Synfilm 32

Rotary Screw Air Compressors

Manufacturer	ISO Grade
Atlas-Copco	Synfilm 46
Bauer	Synfilm 46 (100 in piston units)
Gardner-Denver	Synfilm 46 (100 in piston units)
Gardner-Denver (Aeon 9000)	Synfilm 32
Ingersoll-Rand	Synfilm 46 (100 Recip. in piston units)
Joy Twistair & Res	Synfilm 46 (100 Recip. in piston units)
LeRoi	Synfilm 46 (new) 68 (old) direct drive
Kellog-American	Synfilm 46 (belt drive)
Quincy	Synfilm 46 (new & old)
Sullair	Synfilm 32 (new), 68 (old) direct drive
Worthington	Synfilm 46

*IMPORTANT: Synfilm 46 is recommended 1) for temperatures below 20°F (-7°C ) and 2) if 10 micron or smaller oil filters are used. If one oil is desired for year-round service, Synfilm 46 should be used.

Rotary Vane Air Compressors

Manufacturer	ISO Grade
Davey/Fuller Vane	Synfilm 68 or 46
Worthington	Synfilm 68 or 46
Ingersoll-Rand	Synfilm 68 or 46
Compair-Hydrovane (2-stage)	Synfilm 100
Fuller	Synfilm 100

Reciprocating Air Compressors

Manufacturer	ISO Grade
Most Brands	Synfilm 100 Recip.

(few require ISO 150) (both high and & low pressure - single acting 2 stage or 2 stage double acting - reciprocating air compressors will use Synfilm 100 in crankhouse or lubricators)