Quick maintenance data

Moto Guzzi:
NGK BPR6ES; 0.6 mm (0.023 inch)

From NGK website:
^†BPR7ES; 0.028 inch

Bosch
Platinum WR7DP (4216 or 4016)

Moto Guzzi:
NGK BPR6ES; 0.6 mm (0.023 inch)

From NGK website:
^†B7HS; 0.028 inch
^†B7ES; 0.028 inch

Bosch
Platinum WR7DP (4216 or 4016)

Moto Guzzi:
NGK BPR6ES; 0.6 mm (0.023 inch)

From NGK website:
^†BPR6ES; 0.025 inch

Bosch
Platinum WR7DP (4216 or 4016)

^†Note: Recommendations from the NGK website are listed here as a convenience only. I strongly prefer the NGK BPR6ES listed by Moto Guzzi over any other listed by NGK.

3 liters (3.17 quarts) of 20W-50 motor oil

Note: Many people in countries that sell oil in quart containers simply use 3 quarts of oil. The lack of 0.17 quarts of oil makes no appreciable difference in performance or longevity.

I've never been one to concern myself with one particular brand vs. another. To the contrary, I've purchased and used Walmart's inexpensive Super-Tech brand oil for years. However, recent federal regulations have dramatically decreased the ZDDP content in most oil. ZDDP content of at least 1200 PPM is necessary for our flat tappets and camshafts to last. Therefore, I've now become quite picky as to which oil I purchase. Here are several that still have sufficient ZDDP levels (for now, anyway):

• Mobil 1 15W-50
• Mobil 1 Extended Performance 15W-50
• Mobil 1 V-Twin 20W-50
• Shell Rotella T4 15W-40
• Valvoline Racing VR-1 20W-50

Due to cost and availability concerns, I am currently using Shell Rotella T4 15W-40.

Some of these oils are highly detergent. When switching oils, it is best to perform a couple of very quick oil changes to remove all of the deposits the detergents removed.

Here are some articles on the subject:

• Mobil 1 faq article
• Mobil 1 product comparison
• Is oil killing our cars?
• Shell Rotella Ask Our Expert Communication

750 cc (1.585 pints) of 80W-90 gear oil

GL-4 gear oil is preferred.

I extracted this information from Charlie Mullendore of Antietam Classic Cycle off of the old Yahoo! Loopframe_Guzzi news group (which has now moved to Groups.io).

Like engine oil, I've never been one to concern myself with one particular brand vs. another. To the contrary, I've purchased and used Walmart's inexpensive Super-Tech brand gear oil for years. However, I've learned that the GL-5 rating for gears oils contains sulphur compounds that attack brass and bronze. Since the 4 speed transmission use bronze bushings, the GL-4 rated gear oils should be used. Here are some brands that are still available in GL-4:

• CRC Sta-Lube Gear Oil 85W-90 GL-4
  • Also available from NAPA
• Redline MT-90 75W-90 GL-4

750 cc (1.585 pints) of 80W-90 gear oil

GL-5 gear oil is fine.

The same rear drive housing with the same capacity was used. However, official documentation varies widely as to what quanity of oil should be used (variations sometimes occur within the same document).

• 300 cc (10.1 oz) of 80W-90 gear oil. Sources:
  • V700 Riders Handbook pages 17 and 32
  • V700 Workshop Manual page 6
  • V750 Riders Handbook page 17
  • V7 Special Workshop Manual (supplement to V700 workshop manual) page 3
  • 700 and 750 Special Workshop Manual 2^nd Edition pages 6 and 8
• 230 cc (7.8 oz) of 80W-90 gear oil. Source:
  • V750 Riders Handbook page 32
• 180 cc (6.1 oz) of 80W-90 gear oil. Sources:
  • V700 and V750 Workshop Manual pages 6 and 8
  • Supplement to V700 and V750 Workshop Manual page 2

GL-5 gear oil is fine.

360 cc (12.7 oz) total capacity; of which:

• 340 cc (11.4 oz) should be 80W-90 gear oil
• 20 cc (0.67 oz) should be a molybdenum additive

GL-5 gear oil is fine.

160 cc (5.4 oz) of 30 weight fork oil (per tube)

Some people report improved damping using 8 oz of 30 weight fork oil (per tube)

Drum brake forks

160 cc (5.4 oz) of 30 weight fork oil (per tube)

Some people report improved damping using 8 oz of 30 weight fork oil (per tube)

Disc brake forks

50 cc (1.8 oz) of ATF (per tube)

0.42 mm - 0.48 mm (0.016 inch - 0.018 inch)

When static timing the number 2 cylinder (left side), the narrow lobe on the distributor shaft should be opening the contact breaker points. Correspondingly, the number 1 cylinder (right side) is opened by the wide lobe.