5w30 vs 10w30 - Truck Forums


Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 08-04-2008, 09:52 PM
Senior Member
Thread Starter
 
Join Date: May 2008
Location:
Posts: 258
Default 5w30 vs 10w30

i live in tx and was wondering which would be better?

any ideas...
Reply With Quote
  #2  
Old 08-07-2008, 12:05 PM
Senior Member
 
Join Date: Jul 2007
Location:
Posts: 1,855
Default RE: 5w30 vs 10w30

What have you been using?

Ideally 5w-30 synthetic would be best.


Reply With Quote
  #3  
Old 08-07-2008, 03:09 PM
Senior Member
 
Join Date: Jul 2007
Location:
Posts: 666
Default RE: 5w30 vs 10w30

Use what the manufacturer recommends but in synthetic.
Reply With Quote
  #4  
Old 08-07-2008, 11:59 PM
Senior Member
Thread Starter
 
Join Date: May 2008
Location:
Posts: 258
Default RE: 5w30 vs 10w30

manuf suggests 10w30 but i hear alot about people using 5w30
Reply With Quote
  #5  
Old 08-08-2008, 07:23 AM
Senior Member
 
Join Date: Jan 2008
Location:
Posts: 322
Default RE: 5w30 vs 10w30

what does the number say on your oil cap? mine is 5w30 so that is what i use
Reply With Quote
  #6  
Old 08-12-2008, 09:18 PM
Member
 
Join Date: Jan 2008
Posts: 91
Default RE: 5w30 vs 10w30

I live in Wisconsin and run 10w 30 in the summer and 5w 30 October through April when its cold. My cap says 5w 30 but I like the thicker oil in the summer. I always run mobil 1 and have had great luck with it.
Reply With Quote
  #7  
Old 08-12-2008, 10:48 PM
Senior Member
Thread Starter
 
Join Date: May 2008
Location:
Posts: 258
Default RE: 5w30 vs 10w30

yeah my truck calls for 10w30 so i think ill stick with that. i was talking to someone who says they dont like to switch oil brands too often but im taking my truck to juffy lube for an oil change pretty soon. you guys think it will be fine if i switch to a synthetic such as mobil or royal purple from the conventional ive been using?
Reply With Quote
  #8  
Old 08-13-2008, 07:04 AM
Senior Member
 
Join Date: Jan 2008
Location:
Posts: 322
Default RE: 5w30 vs 10w30

i use royal purple 5w30 and have had no problems from either of my 2006 silverados
Reply With Quote
  #9  
Old 08-13-2008, 07:41 AM
Senior Member
 
Join Date: Jul 2007
Location:
Posts: 1,855
Default RE: 5w30 vs 10w30

Once you use conventional you can't use full synthetic oil only partial. Once you use conventional oil it swells the engine gaskets. Using synthetic afterwards will cause these gaskets to shrink to the point where they no longer fit tight between the metal parts and now you have leaks. So conventional or half and half only.
Reply With Quote
  #10  
Old 08-13-2008, 08:31 AM
Member
 
Join Date: Jan 2008
Posts: 61
Default RE: 5w30 vs 10w30

I use valvoline 10w40, gm just wants you to use the 5w30 so their mileage rating are better, same reason they cut the skirts on pistons for higher mileage.

Yet now gm engines have piston slap.

friend has used 20w40 in his 350 engine and has 314K miles. so it must be good.

Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
5W30 vs 10W30 elite130 Chevy Silverado/ GMC Sierra Forum 8 12-11-2007 12:36 AM


Tags
10w, 10w30, 2009, 30, 350, 5w, 5w30, 5w30vs10w30, chevy, dakota, dodge, ford, oil, ranger, silverado

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 12:06 AM.