Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil

FICTIONAL SAMPLE - Contoso Renewables, Quellmoor Ridge Wind Farm and every organisation, person, product and value in this wiki are invented. Not for operational use.

Trey Research Laboratories issued an oil analysis report for the WTG-07 main gearbox at Quellmoor Ridge. The report records sample details, laboratory results, an alert overall condition, comments on ferrous wear, recommendations, and a recent trend table.

Key facts

• The report is oil analysis report TR-OA-2026-0614 for gearbox oil from WTG-07 at Quellmoor Ridge.¹
• The customer is Contoso Renewables, Quellmoor Ridge Wind Farm.¹
• The asset is the WTG-07 main gearbox, a Fabrikam FGT-3200 with serial FGT-3200-18-07752.¹
• The lubricant is Proseware PWG 220, ISO VG 220, in service since 2025-10-15.¹
• The sample ID is TR-26-11873, sampled on 2026-06-10 by Callum Rydings from the sampling valve with oil at operating temperature.¹
• The sample was received on 2026-06-12 and reported on 2026-06-17, and the analyst was Imogen Thackwray, Senior Lubrication Analyst.¹
• The overall condition is ALERT and action is required.¹
• Viscosity at 40 °C was 229 mm2/s, within the alert-limit range of 198 to 242, with normal status.¹
• Water was 180 ppm against an alert limit of 300 ppm, with normal status.¹
• Total acid number was 0.9 mg KOH/g against an alert limit of 1.5 mg KOH/g, with normal status.¹
• Iron was 64 ppm against an alert limit of 50 ppm and was reported with ALERT status.¹
• The PQ index was 112 against an alert limit of 60 and was reported with ALERT status.¹
• Particle count was 20/18/15 code against an alert limit of 19/17/14 and was reported with ALERT status.¹
• The report states that ferrous wear increased sharply since the previous sample, TR-OA-2026-0241 of 2026-03-17, when Fe was 31 ppm and PQ index was 44.¹
• The report interprets large ferrous particles with normal copper as indicating rolling-element bearing distress rather than gear wear.¹
• The report states that viscosity and water content are normal for PWG 220.¹
• The recommendations are to review vibration trends for output stage bearings, inspect the HSS bearings by endoscope, replace the filter element, and resample within 30 days.¹
• The trend table shows the 2026-06-10 sample as PWG 220 oil with Fe 64 ppm, PQ index 112, viscosity at 40 °C of 229, and ALERT status.²
• The results relate only to the sample received, and the report was approved by Imogen Thackwray of Trey Research Laboratories.²

Contents

Report identification

Trey Research Laboratories issued oil analysis report TR-OA-2026-0614.³

The report covers gearbox oil for WTG-07 at Quellmoor Ridge.³

The customer is Contoso Renewables, Quellmoor Ridge Wind Farm.³

The asset is the WTG-07 main gearbox, Fabrikam FGT-3200, serial FGT-3200-18-07752.³

Table t01 · p. 1

Row	Field	Value
2	Customer	Contoso Renewables, Quellmoor Ridge Wind Farm
3	Asset	WTG-07 main gearbox, Fabrikam FGT-3200, serial FGT-3200-18-07752
4	Lubricant	Proseware PWG 220 (ISO VG 220), in service since 2025-10-15
5	Sample ID	TR-26-11873
6	Sampled	2026-06-10 by Callum Rydings (sampling valve, oil at operating temperature)
7	Received / reported	2026-06-12 / 2026-06-17
8	Analyst	Imogen Thackwray, Senior Lubrication Analyst

Agents can query this table as t01 with the query_table tool.

Sample and lubricant details

The lubricant is Proseware PWG 220, ISO VG 220, in service since 2025-10-15.³

The sample ID is TR-26-11873.³

The sample was taken on 2026-06-10 by Callum Rydings from the sampling valve with oil at operating temperature.³

The sample was received on 2026-06-12 and reported on 2026-06-17.³

The analyst was Imogen Thackwray, Senior Lubrication Analyst.³

See table t01 above.

Overall condition and laboratory results

The overall condition is ALERT, with action required.³

The laboratory results table reports viscosity, water, total acid number, elemental metals, PQ index, and particle count.³

Viscosity at 40 °C, viscosity at 100 °C, water, total acid number, copper, chromium, and silicon were reported as normal.³

Iron, PQ index, and particle count were reported with ALERT status.³

Table t02 · p. 1

Row	Test	Method	Result	Unit	Alert limit	Status
2	Viscosity at 40 °C	kinematic	229	mm2/s	198 to 242	normal
3	Viscosity at 100 °C	kinematic	26.1	mm2/s	-	normal
4	Water	coulometric titration	180	ppm	300	normal
5	Total acid number	titration	0.9	mg KOH/g	1.5	normal
6	Iron (Fe)	ICP	64	ppm	50	ALERT
7	Copper (Cu)	ICP	7	ppm	25	normal
8	Chromium (Cr)	ICP	2	ppm	10	normal
9	Silicon (Si)	ICP	9	ppm	15	normal
10	PQ index	ferrous debris	112	-	60	ALERT
11	Particle count	ISO 4406	20/18/15	code	19/17/14	ALERT

Agents can query this table as t02 with the query_table tool.

Comments and interpretation

Ferrous wear has increased sharply since the previous sample, which the report identifies as TR-OA-2026-0241 of 2026-03-17 with Fe 31 ppm and PQ index 44.³

The report states that large ferrous particles with normal copper indicate rolling-element bearing distress rather than gear wear.³

Viscosity and water content are normal for PWG 220.³

Recommendations

The report recommends reviewing the vibration trend of the output stage bearings.³

It recommends inspecting the HSS bearings by endoscope.³

It recommends replacing the filter element and resampling within 30 days.³

Trend and approval

The trend section contains Figure 1, described as iron and PQ index of the WTG-07 gearbox oil.⁴

The trend table lists samples from 2025-06-11, 2025-12-09, 2026-03-17, and 2026-06-10.⁴

The latest trend-table entry is report TR-OA-2026-0614 for 2026-06-10, with PWG 220 oil and ALERT status.⁴

The report states that results relate only to the sample received and that the report was approved by Imogen Thackwray, Senior Lubrication Analyst, Trey Research Laboratories.⁴

Table t03 · p. 2

Row	Sample date	Report	Oil	Fe (ppm)	PQ index	Viscosity 40 °C	Status
2	2025-06-11	TR-OA-2025-0388	PWG 320	22	19	318	NORMAL
3	2025-12-09	TR-OA-2025-0951	PWG 220	18	21	221	NORMAL
4	2026-03-17	TR-OA-2026-0241	PWG 220	31	44	224	NORMAL
5	2026-06-10	TR-OA-2026-0614	PWG 220	64	112	229	ALERT

Agents can query this table as t03 with the query_table tool.

Figures

• Figure f01 (p. 2): Figure 1 - Iron and PQ index of the WTG-07 gearbox oil. Generated description: A two-line time series chart compares Fe (ppm) in blue circles and PQ index in orange squares across four dates: 2025-06-11, 2025-12-09, 2026-03-17, and 2026-06-10. Fe is about 22, 18, 31, and 64 ppm, while PQ index is about 19, 21, 44, and 112. Two dashed horizontal reference lines are labeled Fe alert 50 and PQ alert 60.⁵

Related

• Assets: Quellmoor Ridge Wind Farm, WTG-07
• Components: gearbox, HSS bearing, oil filter element
• Products: Fabrikam FGT-3200, Proseware PWG 220, Proseware PWG 320
• Organisations: Contoso Renewables, Fabrikam Getriebetechnik GmbH, Proseware Lubricants, Trey Research Laboratories
• Topics: Gearbox lubrication and oil changes, Gearbox temperature, vibration and oil analysis

Sources

Footnotes

1. Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil — p. 1 · ✓ quote verified ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷

2. Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil — p. 2 · ✓ quote verified ↩ ↩²

3. Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil — p. 1 · paraphrase ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹

4. Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil — p. 2 · paraphrase ↩ ↩² ↩³ ↩⁴

5. Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil — p. 2 · generated description ↩

Provenance badges✓ quote verified the quoted words were found verbatim in the source textparaphrase reworded from the source text; numbers checked, no verbatim quotegenerated description written by a model to describe a figure; not a quote