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post #1 of 13 (permalink) Old 06-19-2014, 05:44 PM Thread Starter
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My stupid question

I called the dealer near my house and spoke to the service department about oil and coolant for my 2004 VN750. I asked about synthetic oil and also about Dexcool. He kept repeating to only use what was in it from the manufacturer. Is there a benefit to either standard or synthetics in the bike? Will it run cooler? Sorry if this has been asked before but I couldn't find it and I wanted to ask fellow riders of the 750.
Thanks for any replies.
Jmp

Last edited by Jmpmstr1998; 06-19-2014 at 05:46 PM.
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post #2 of 13 (permalink) Old 06-19-2014, 05:48 PM
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I do not want any of the orange coolant in anything that does not have to have it.
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post #3 of 13 (permalink) Old 06-19-2014, 06:53 PM
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Regular coolant and i only use vtwin oil. Wally world has it. Its expensive but in a harley air cooled vtwin you want an oil that doesnt break down, lose its viscosity at high heat. Would use the same stuff in the vn now if i still had it.





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post #4 of 13 (permalink) Old 06-19-2014, 07:06 PM
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I've been using Rotella Synthetic since I got the bike, and while I don't know if it has any advantages, I certainly haven't noticed any disadvantages to using synthetic over dino oil. Also, since Rotella synthetic costs about as much as other brands of dino oil, I just opted to go for synthetic.

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post #5 of 13 (permalink) Old 06-19-2014, 07:08 PM
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On the oil, people here will very in what they suggest. I prefer Castrol 10w40. Worked best with the clutch for me. All synthetic is great stuff BUT keep in mind that it will remove any and all dyno oil deposits which may build up around a potential leak and seal it off. Removing the deposit will show the leak. When synthetic oil came out on market people with older engines thought it was eating the seals and gaskets out of their engines.

Antifreeze. Get no that says silicate free for best results of the internal parts. Mix it with distilled water. Keeps down radiator corrosions.
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post #6 of 13 (permalink) Old 06-19-2014, 07:12 PM
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Shell rotella is widely used here with good results. I used Mobil 1 also with no negative effects. Just make sure the mobil is for bikes.

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post #7 of 13 (permalink) Old 06-19-2014, 07:27 PM
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Quote:
Originally Posted by Chuck A. View Post
On the oil, people here will very in what they suggest. I prefer Castrol 10w40. Worked best with the clutch for me. All synthetic is great stuff BUT keep in mind that it will remove any and all dyno oil deposits which may build up around a potential leak and seal it off. Removing the deposit will show the leak. When synthetic oil came out on market people with older engines thought it was eating the seals and gaskets out of their engines.

Antifreeze. Get no that says silicate free for best results of the internal parts. Mix it with distilled water. Keeps down radiator corrosions.
Yes indeed! I was wary of putting the synthetic oil in at first. It's an 85 VN700 and aside from being old, I had no idea what condition the gaskets were in, but I just risked it anyway. No leaks at all, thankfully

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AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
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post #8 of 13 (permalink) Old 06-19-2014, 08:44 PM
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castrol 10 40 is what i use and it does the trick however i have never had a grinding clutch or any other oil issues except when i was over heating last summer and that was due to a bad radiator

as for coolant i recommend standard 50/50 green coolant the cheap store brand works fine if you get full strength mix it 50/50 with distilled water

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post #9 of 13 (permalink) Old 06-19-2014, 09:08 PM
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Another oil thread...OMG.

I used Shell Rotella in every bike I've owned. The organic stuff.

My manual for my Triumph says to use a full or partial synthetic oil in the bike....so for the first time I'm using the Rotella Synthetic. So far no issues.
Hard to find a bad oil really....


As for coolant, ANY coolant that's "safe to use in aluminum engines" is also fine.
Recent thread:
https://www.vn750.com/forum/showthread.php?t=55098

It's more expensive to buy "premixed" coolant. A bottle of distilled water is like a dollar, yet somehow you pay more for half as much coolant and that water in a premixed jug.WTF?

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post #10 of 13 (permalink) Old 06-19-2014, 09:12 PM
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Just make sure it doesn't say that it has friction modifiers. I tried several before I found one that didn't give me the coffee grinder noise. Castrol worked well for me & valvoline.

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