what is the thickest oil we can use?

[jtrip]

this sounds stupid but its the top part of the motor the very top where the half moons are if that makes since

[BassCliff]

Hi,

My half-moons have been through 3 valve adjustments now and are starting to leak a little. I've got extra sets so I'll be replacing them at my next valve check. In fact, I'll probably install them inside-out just to be different.


Thank you for your indulgence,

BassCliff

[jtrip]

hay basscliff do you think the leak could be from the breather hose problem

[BassCliff]

Hi,

If the breather is clogged it could exacerbate the issue.


Thank you for your indulgence,

BassCliff

[Nessism]

That 5W-40 Rotella will be thicker than 15W-40 when the temps are really hot so not sure what you are trying to accomplish.

[Mysuzyq]

That 5W-40 Rotella will be thicker than 15W-40 when the temps are really hot so not sure what you are trying to accomplish.

Hmm...they should be the same at higher temps as I understand it, but differ in cold weather, no?

[jtrip]

well i pulled the breather hose off this morning and guess what the leak stoped so far. but i still will change the oil out to the 15w-40 as hot as it is here i don't think it would hurt.when it gets around 50 i will prob go back to the 5w-40 but thanks yall for the help i needed it .as many problems that i have had to fix on my bike by now i should just about know it inside and out lol

[Nessism]

Hmm...they should be the same at higher temps as I understand it, but differ in cold weather, no?

Synthetic oil is more stable at killer high temps, such as getting stuck in traffic on a hot summer day. It has a higher flash point and doesn't thin out as much under extreme conditions.

[fastpakr]

well i pulled the breather hose off this morning and guess what the leak stoped so far. but i still will change the oil out to the 15w-40 as hot as it is here i don't think it would hurt.when it gets around 50 i will prob go back to the 5w-40 but thanks yall for the help i needed it .as many problems that i have had to fix on my bike by now i should just about know it inside and out lol

The 15w40 won't be ANY thicker than the 5w40 in hot weather. The synthetic oil will give slightly better protection in extreme temperatures, so if anything you're better off leaving it in place.

[MUBULLDOG]

20-50 Golden Spectro

I know I'm new to all this but I have read some good articles on Golden Spectro. I really just got back into bikes. I spent $450 on a 82 GS650L. Went through the reg maintence: new plugs (NGK), K&N oil and air filter. When I drained the oil, there was a good amount of gas mix in the oil. I think this came from the broken petcock valve, letting gas flow into the crankcase. Well I thought "Why not spend a little extra on good oil"? So I bought 3 qrts of the 20-50 Golden Spectro (almost $10 per qrt). Hope this helps.

[simon kuether]

I know I'll cop a belting over this , but .............
I use a 40W70 , which is about a 50W , mineral in my 'S . Gulf Western Comp 50 Plus for any Aussies interested .
I'm living in the tropics though .

Cheers , Simon .