Oil - The official thread

MattRat

TT Racer
How come people need the nut on the end of some of these filters?

some of the nuts are drilled through sideways to allow for a wire to further secure the filter when racing. That, and I always thought the nut was for easy removal without the 10 minutes of "Where the fuck did I put the filter wrench?"
 

drlapo

Hooligan
WalMart Mobil 1 15-50 in the Speed Triple, Street Triple and Daytona
Klotz 15-50 in the Thruxton because I bought a case at the races
Castrol GTX 20-50 in the BMW R80, BSA B50 and Triumph T140
Walmart Supertech filters in everything
 

hs01jowe

Two Stroke
How often do you recommend an oil change on a bonnie? Is it okey to do it "by the book" or is it better to do it more often? I have my first 800 km service in 1 week and triumph says that after that it's every year/10.000 km..
 

Threewheelbonni

Two Stroke
By the book is just fine. I used to do 12000 miles a year then hit a patch of work that dropped me to less than 2000. Now it's back up to hopefully where 6000 miles is 12 months. Either way just follow the manual (the 1 year is just as important as the 6000 miles/10000 km), the used oil will come out dark but not totally black and certainly not gritty. If you are high/hot/ride only in a city and you see the oil is black in the sight glass, you might have a reason to change at 4000 miles or so, but I doubt many people have that. Grit needs investigating, not just flushing out. My motor is thrashed with the load of the sidecar and off road use and seems to run just fine.

The colour of the oil tells you what's in it. Red/green/yellow and is new, black is dirty and has been hot to the point of starting to break down, chocolate brown has water in it.

When some ancient loon suggests hourly/600 yard oil changes remember this is a modern motor using modern oils, not some cast iron hobby machine. Every time you change the oil the motor runs for a few seconds with no oil and a few minutes with a fluctuating oil pressure (the red light only monitors up to the pressure switch). This is accelerated wear far worse than having used oil in there for a few extra miles. Over frequent oil changes are as bad as too few IMHO although it's hard to say where the lines are between causing wear through changes, wasting money, getting it right and causing wear by infrequent changes.

When my bike was new in 2004 Triumph sent me a new service book to replace the original on the day the new sportster was launched. This switched the 790 motor from 4000 miles to 6000, which to me suggests the odd thousand miles makes naff all difference and the lines are pretty blurred.

BTW, I use supermarket brand semi-synthetic. When you count the refineries you won't find any with Wallmart/ADSA on them, so I rather think I can assume their oil is just relabelled. ADSA oil is by Total, Halfords by Shell in the UK.

Andy
 

hs01jowe

Two Stroke
Thanks Andy, once a year it is then. I don't think I will go over the "mileage limit" because of the short summers here in sweden :(

At least this is a good way to make sure the oil is fresh during the winter down time..
 
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Threewheelbonni

Two Stroke
A winter layup is another factor. In theory you should change the oil at the layup and when you go back on the road. I believe the idea is that the bike shouldn't sit all winter with dirty oil in there and shouldn't be started on old oil when 4 months cold, but that the new oil will be like chocolate milkshake after the break if you put it in too soon. If your garage is heated (no water) I'd be tempted to change the oil in autumn and take a look at in in spring with the idea of simply starting up and riding. The alternative is to use the cheapest oil you can lay your hands on for the winter and put better stuff in in spring. I know a rider who drains his oil, puts it through a coffee filter, adds a teaspoon of white spririt (helps with water?) and puts it back for the winter, but I wouldn't bet on that. BMW and Guzzi riders use machine oil for the lay up, but we have clutch contamination issues, so best stick with motorcycle oil unless someone knows better.

Better idea still: Get a sidecar, a heated jacket and come ride :up:

Andy
 

hs01jowe

Two Stroke
The bike will sleep under the dustcover at 21°c in the back of the local Triumph showroom, so I don't worry about the water too much :)
 
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