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Living in Florida and using 10w/30 synthetic oil? Damaging to the engine?

7.2K views 6 replies 4 participants last post by  PsyDoc  
#1 ·
Hey guys,

It's getting pretty hot down here. At my last oil change AutoZone did not have any 5w/30 synthetic so I decided to try 10w/30 synthetic. Most auto part stores and oil change places here in Florida usually carry the higher weight viscosity oil more than anything else due to the typically higher temperatures. I then heard through the grapevine, (aka the dealership) that using 10w/30 could be potentially damaging to the our engines as it might not "flow well" through the tight spaces and fittings or such ramblings. Now correct me if I am wrong but when the temperature is 60F and above goes up to 95F and you are using Synthetic oil anyway (which should flow well at any temperature), is there really a difference in flow rate so that I should be concerned. Is there a risk to the longevity of the engine, seals etc?? Please shed some light on this subject because, if there is reason for concern, I will change out the oil immediately. I go approximately 6,000 miles between oil changes. Noel.....any thoughts?

Thanks....

BTW if anyone hasn't gone in for the nation wide recall on the headlight clips it just takes a few minutes and will give you peace of mind. You should have gotten the recall in the mail. Also, I am now going in to have the clutch master cylinder replaced for the second time, so if your clutch is clicking, sticking, or groaning, it is likely the push rod getting caught on something in the master cylinder.

Rob
 
#4 ·
Hey Man,
You don't have anything to worry about here. That is misinformation and your engine will not know the difference between the two. The lower # 5 or 10 pertains to the friction modifyers included in the additives package.

The Additives package contains Rust Inhibitors, Anti-foaming Agents, Anti-oxidents, and Friction Modyfiers. The friction modyfiers dictate the 5 or 10 #.
There are different additive packages that is added to the Base Stock to give a company different oils with the same base stock

The flow rate between the 5 or 10 would be more noticable at 0 degrees, not a concern above 30 degrees. It will be easier to prime your engines bearings by a fractional amount. Fractional gain in fuel economy. Probably not noticable
In the oil industry you get what you pay for. Always use synthetics.

That said the higher # gives an indication of the film strength, the thicker the oil the thicker the film strength. Go with what is acceptable for your zone. I live in Texas and ran 10-30 for a 200,000 miles in a Prelude with no ill affect. I pulled the pan to change the gasket and the whole bottom end looked gold anodized. synthetics

Good Luck
X
 
#5 ·
Hey thanks for the info man. I appreciate this. I know Honda made some statement that they are now recommending 5w/20?! or 5w/30 for all of their cars.....Not sure why they made this statement but I am sure it had to do with our brothers up north, sub-freezing temperatures, and premature engine wear. I may alternate back and forth 5w and 10w from winter to summer. Thanks again.
 
#6 ·
I do alternate between 5w30 and 10w30 based on summer or winter time, Ive also ran 5w20 in the car as well, with absolutely no problems