SL vs SM API oil grade
#1
SL vs SM API oil grade
Im just about to perform my first oil change on my GT, and the Ford dealer gave me SM grade oil. I thought I read someone saying NOT to use SM grade? If so, why is that? The operators manual does not give a grade rating, just says 5W20 API for gasoline engines.
#4
RE: SL vs SM API oil grade
I thought it wasnt good for synthetic until a few thousand miles (ie, 20K or so) were put through, to avoid any possibility of oil burning. ??
Amsoil is what I have planned for her in spring their new 0W20 full syn.
Amsoil is what I have planned for her in spring their new 0W20 full syn.
#6
RE: SL vs SM API oil grade
ORIGINAL: frdfrst
there's something out there that i rembering reading about not to use royal purple,not right stuff in it.i use one qt. royal purple 5-20,4 1/2 moble 1 5-20,with ford racing filter.
there's something out there that i rembering reading about not to use royal purple,not right stuff in it.i use one qt. royal purple 5-20,4 1/2 moble 1 5-20,with ford racing filter.
#7
RE: SL vs SM API oil grade
RP doesn't list which specs it meets, because it doesnt meet them (at least not officially). Also many experts (google it) say RP contains harsh additives and detergents to make it work really well, which may damage the metals.
I dont know if I believe it but why risk it when theres plenty of other good companies to choose from?
And dont trust amsoil... They have too much fake internet marketing to be trusted. Again, why trust them when theres well known and proven companies like Mobil 1 out there.
I dont know if I believe it but why risk it when theres plenty of other good companies to choose from?
And dont trust amsoil... They have too much fake internet marketing to be trusted. Again, why trust them when theres well known and proven companies like Mobil 1 out there.
#8
RE: SL vs SM API oil grade
Dont use royal purple.. it has MOLY in it which will build up and clog oil lines and whatnot......Mobil 1 i sthe most popular choice, but Amsoil is nice too .. Redline etc.... Just make sure there isny MOLY in it..
#9
RE: SL vs SM API oil grade
" And dont trust amsoil... They have too much fake internet marketing to be trusted."
I have seen independent lab tests (www.sportrider.com) that showed Amsoil and Mobil 1 performing at the top. Amsoil is cheaper for me. Just because it is marketed differently (not major chains) has no bearing on its performance.
Though it is motorcycle related, it shows Amsoil isnt "fake", and its as good as Mobil 1.
http://www.sportrider.com/tech/146_0308_oil/
http://www.sportrider.com/tech/146_0310_oil/
I have seen independent lab tests (www.sportrider.com) that showed Amsoil and Mobil 1 performing at the top. Amsoil is cheaper for me. Just because it is marketed differently (not major chains) has no bearing on its performance.
Though it is motorcycle related, it shows Amsoil isnt "fake", and its as good as Mobil 1.
http://www.sportrider.com/tech/146_0308_oil/
http://www.sportrider.com/tech/146_0310_oil/
#10
RE: SL vs SM API oil grade
ORIGINAL: CataclysmGT
I thought it wasnt good for synthetic until a few thousand miles (ie, 20K or so) were put through, to avoid any possibility of oil burning. ??
Amsoil is what I have planned for her in spring their new 0W20 full syn.
I thought it wasnt good for synthetic until a few thousand miles (ie, 20K or so) were put through, to avoid any possibility of oil burning. ??
Amsoil is what I have planned for her in spring their new 0W20 full syn.
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tj@steeda
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09-17-2015 07:57 PM