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Mobil 1 Question

I change my oil and filter every 5000 miles. When I change my engine oil I only put 3 1/2 qts in, a couple of thousand miles later I dump the other 1/2 qt in.
kemo
 
nvsteve said:
I did decide and have seen independent lab reports to back it up.
Using Mobil 1 15W-50 in Harley-Davidsons
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The link above is to Mobil 1 rather than an independent lab. HD indicates that if you can not find a 20W-50 motorcycle engine oil, then an oil manufactured for diesels can be used until the motorcycle engine oil can be located. So even HD says that an oil like the 15W-50 can be used in a HD engine if required.

But the question I would have is what is the logic for using the 15W-50 engine oil primarily designed for use in diesel engines as opposed to the 20W-50 VTwin motorcycle engine oil designed for use in air cooled v-twin engines like HD engines?

TQ
 
TQuentin1 said:
The link above is to Mobil 1 rather than an independent lab. HD indicates that if you can not find a 20W-50 motorcycle engine oil, then an oil manufactured for diesels can be used until the motorcycle engine oil can be located. So even HD says that an oil like the 15W-50 can be used in a HD engine if required.

But the question I would have is what is the logic for using the 15W-50 engine oil primarily designed for use in diesel engines as opposed to the 20W-50 VTwin motorcycle engine oil designed for use in air cooled v-twin engines like HD engines?

TQ
Click to expand...
The link I provided was merely to show that Mobil 1 says it's fine to use. At least part of the logic to use Mobil 15-50 is that you can buy 5 qt. jugs for $21 at Walmart. That's $4.20/qt. vs. $8 plus.
Here's a copy of a Used Oil Analysis by Blackstone Labs. This bike is regularly ridden in 100 degree plus temps. (Phoenix)
BTW I'm not touting this oil just offering it as an alternative. I currently use Amsoil but bought some to try at next oil change.
Post won't allow me to copy the analysis. I'll try another post.

__________________

TQ
Wouldn't let me post the analysis. PM sent.
 
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TQuentin1 said:
The link above is to Mobil 1 rather than an independent lab. HD indicates that if you can not find a 20W-50 motorcycle engine oil, then an oil manufactured for diesels can be used until the motorcycle engine oil can be located. So even HD says that an oil like the 15W-50 can be used in a HD engine if required.

But the question I would have is what is the logic for using the 15W-50 engine oil primarily designed for use in diesel engines as opposed to the 20W-50 VTwin motorcycle engine oil designed for use in air cooled v-twin engines like HD engines?

TQ
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TQ, you must be riding a Harley made by a different Company than the one I ride. My manual does not specify only 20-50 oil. It specifies everything from 10W40 to 20W50 to SAE 50 and SAE60. All depending upon your lowest anticipated temp. Granted it does show 20/50 as preferred but nowhere does it state V- twin oil. It does state diesel rated oil which Mobil 1 15/50 does meet.
 
blademan said:
TQ, you must be riding a Harley made by a different Company than the one I ride. My manual does not specify only 20-50 oil. It specifies everything from 10W40 to 20W50 to SAE 50 and SAE60. All depending upon your lowest anticipated temp. Granted it does show 20/50 as preferred but nowhere does it state V- twin oil. It does state diesel rated oil which Mobil 1 15/50 does meet.
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Yes you're right. I live and ride in Texas, so we have ambient temps. in above 40* F most of the time.

But it is your bike. Use whatever you want in it.

TQ
 
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