![]() |
Oil weights?
My 2005 525's call for 25w-40, but I can't find it around.
I've been using Mobile 1 oil and filters. Can I substitute 15w-50 in a warm climate? Thanks for the input... Jerry |
Re: Oil weights?
YEP. There is an oil thread that covers every oil there is and some I've never heard of.
|
Re: Oil weights?
Originally Posted by Jnewton
My 2005 525's call for 25w-40, but I can't find it around.
I've been using Mobile 1 oil and filters. Can I substitute 15w-50 in a warm climate? Thanks for the input... Jerry In synthetic oils a multi-vi is acceptable as the oil has better film strength and resists heat and are good for average type offshore use. If you run hard, have hopped up mills or race...then a premium synthetic is best as they most resist breakdown. |
Re: Oil weights?
Originally Posted by Hydrocruiser
In warm climates a straight weight conventional is a must. The 25W-40 is a straight weight blend and is similar in many respects to a straight weight 40.
In synthetic oils a multi-vi is acceptable as the oil has better film strength and resists heat and are good for average type offshore use. If you run hard, have hopped up mills or race...then a premium synthetic is best as they most resist breakdown. Thanks... that's all great information. But... can I substitute the available Mobile 1 synthetic 15w-50 for the factory recommended 25w-40? I read an earlier thread where you recommended Mobile 1 fully synthetic. This stuff is what they call their extended mileage full synthetic. I plan to do a few poker runs durning the year, but mostly I run around at half throttle with the family. Thanks again for the advice. |
Re: Oil weights?
Originally Posted by Jnewton
*******************************************
Thanks... that's all great information. But... can I substitute the available Mobile 1 synthetic 15w-50 for the factory recommended 25w-40? I read an earlier thread where you recommended Mobile 1 fully synthetic. This stuff is what they call their extended mileage full synthetic. I plan to do a few poker runs durning the year, but mostly I run around at half throttle with the family. Thanks again for the advice. Many use the 15W-50 Mobil-1 and like it in place of any conventional oil. The thought today is that all fully synthetic oils outperform any conventional oils. In a Poker Run where you are at WOT for a lot of time and running quite hard.. I personally would use a 20W-50 Premium Synthetic such as Mobil-1 V-Twin...Amsoil Synthetic Racing..Redline..RP Racing...Swepco...Alisyn..for that particular event. |
Re: Oil weights?
Originally Posted by Jnewton
*******************************************
Thanks... that's all great information. But... can I substitute the available Mobile 1 synthetic 15w-50 for the factory recommended 25w-40? I read an earlier thread where you recommended Mobile 1 fully synthetic. This stuff is what they call their extended mileage full synthetic. I plan to do a few poker runs darning the year, but mostly I run around at half throttle with the family. Thanks again for the advice. Many use 15W-50 Mobil-1 EP and like it in place of any conventional oil. The thought today is that all fully synthetic oil outperform any conventional oils. In a Poker Run where you are at WOT for a lot of time and running quite hard.. I personally would use a 20W-50 Premium Synthetic such as Mobil-1 V-Twin...Amsoil Synthetic Racing..Redline..RP Racing...Swepco...Alisyn..for that particular event. A Premium Synthetic oil handles heat and shear about 30% better than a conventional synthetic. A nice edge of extra protection to have if you ask me when you have a lot of "WOT stick time" in an offshore boat. |
| All times are GMT -5. The time now is 10:26 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.