Mobil TDT 5w40 Moto Guzzi 1200 Sport

Joined
May 25, 2005
Messages
36
Location
NC
Code:
Miles on Unit  25,303
Miles on Oil    4,000

Iron 		11
Copper		139
Tin		3
Aluminum	13
Silicon		11
Sodium		41
Potassium	6
Water		<.05

Magnesium	824
Calcium		1147
Phosphorus	859
Zinc		1211
Molybdenum	4
Boron		64
Viscosity	13.3
Fuel		<1
TBN		7.0
 
Joined
Jun 28, 2005
Messages
2,192
Location
Cedar Park, TX
well brass is copper and zinc but the zinc could be masked by whats in the oil. i think a bushing has a bit of wear on it now. steve
 

smoothxman

Thread starter
Joined
May 25, 2005
Messages
36
Location
NC
Bike does have an an oil cooler. Through the years Guzzi has recommended everything from 5w40, 10w50, 20w50 to the current 10w60 for this engine. I don't have enough knowledge to understand why all the other metals seem quite low, the copper is high. Lead, chromium, nickel, silver was less <1 so I didn't even list it. I am assuming the sodium is leftover from the VR1 I was running.
 
Joined
Nov 5, 2013
Messages
3,213
Location
Kentucky
Originally Posted By: smoothxman
Through the years Guzzi has recommended everything from 5w40, 10w50, 20w50 to the current 10w60 for this engine.
What you're neglecting to mention is that Moto Guzzi actually issued a Technical Service Bulletin (010-2006) stipulating the usage of 10w-60 in the 1200. Instead, you've decided on running TDT, which is 62% thinner than the specified product @ 100ºC. Good luck.
 
Joined
Feb 13, 2012
Messages
3,870
Location
NEUS
I don't care for lighter oils in air-cooled bikes. Without a cooling system, thicker oil provides some measure of security for hotter days, slow traffic, etc. I like the Red Line 20w-50 that I'm using now, although my R-Bike has an oil cooler and can do okay with xw-40. Yours appears to have some trouble brewing, and I'm sure there's a reason the manufacturer is calling for this heavier oil. HTHS Viscosities: M1 TDT: 3.8 RL 20w-50: 6.1 RL 20w-60: 7.0 Run xw-60 and get another analysis done.
 
Joined
May 14, 2014
Messages
524
Location
sc/fl
I would heed the warnings and switch to a xx-60 and re-analyze.
 
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