See http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000054#000000quote:
Delvac has
???
Not if a 40 weight will work in your application.quote:
i don't need a motorcycle oil - correct?
Huh? You don't think higher levels of zinc and phosphorus provide better protection?quote:
Originally posted by userfriendly:
Higher levels of ZDDP provide longer protection, not better protection.
Delo and other HDMOs are extended service engine oils, that is why the high additive levels.
I'm with Jelly. If the hydrodynamic lubrication breaks down, the barrier agents (zinc, phosp) come into play. Hydrodynamic lubrication breakdown can happen for a variety of reasons, not all which are associated with usage time. Motorcycles are notorius for hydrodynamic lubrication breakdown (don't they call it shearing?). So why not have an abundant supply of barrier lubrication, even if it may not be fully utilized every interval?quote:
Higher levels of ZDDP provide longer protection, not better protection.
The exorbitant cost.quote:
But what makes a motorcycle oil a motorcyle oil?
........quote:
Originally posted by JonS:
But what makes a motorcycle oil a motorcyle oil? I thought it was the added amounts of Zinc and Phos. Some diesel oils (Delvac 1300, Chevron Delo 15w-40)have more of this than motorcycle oils do.
Now THAT is funnyquote:
Originally posted by doyall:
The exorbitant cost.quote:
But what makes a motorcycle oil a motorcyle oil?
I've currently got (gosh I hate to say it) Castrol GTX 20w50 and Auto-Rx in my '99 Harley TC-88 to clean it out after a cam bearing disentigration and crankcase ventilation breach were repaired. Only going to leave it in 1,000 miles (150 to go). For the rinse I am going to use (gosh I hate to say it) Castrol GTX High Mileage 20w50. Will run the HM 1,500 miles, unless I get too scared, and then do a UOA to make sure it's cleaned out good and get baseline wear numbers before putting in (gosh I hate to say it) Castrol Syntec 20w50. Will also get to see how bad it (HM) shears-down. When I put in the (gosh I hate to say it) Syntec, I will also put M1 V-Twin 20w50 in my girlfriend's bike and do UOA's on them both at 3k. We ride together and she fairly well keeps up so we'll see how the comparison goes. After that I'm confident it will be M1 15w50 "red cap" in them both, unless the (gosh I hate to say it) Syntec performs well.quote:
has anyone tried the SL formulation of a 10-40 or 15-40 or 20-50 in a bike? And for how long did you do this?
quote:
Originally posted by JonS:
Chevron Delo 400 15w-40 has
.116 phos and .151 Zinc
Valvoline MC has
.109 phos and zinc .127
Delvac has
???
This leads me to believe i don't need a motorcycle oil - correct?
What are the numbers for Delvac
I use Mobil 1 15w50 in my bike and posted my first UOA. It's holding up well and producing lower than average wear numbers. Will post again when it's time for the next one.quote:
Originally posted by JonS:
If the ifference is not the Zinc and Phos, has anyone tried the SL formulation of a 10-40 or 15-40 or 20-50 in a bike? And for how long did you do this?