EVO Oil woes!
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
This is a complete and total myth......
People who change the gaskets and then warm up the bike forever fail to realise that the gaskets they put in were superior technology to the original parcel paper ones fitted in the factory.
The synth oil thing is true though.
Road Captain
Joined: Dec 2007
Posts: 660
Likes: 0
From: Grayson, GA
I have been Mobil 1 for nearly 10 years in my S&S Evo motor without a single leak!
Club Member
Joined: Mar 2009
Posts: 66,125
Likes: 51,441
From: Niles Canyon Ca.
Syn. oil may be the cats *** but it wants OUT and it will seep on older bikes with miles on them , can't stop it . Hell the stuff will weep through solid sealed case castings if the aren't high end & density .
Advanced
Joined: Sep 2011
Posts: 80
Likes: 0
From: Canada
Clean motor very well, quarter car-wash works . Dry as much as possible. Spray entire motor with Arrid extra dry deodorant...it will leave a white powder residue all over the motor...crank motor and it will be very apparent where the leak is...sound crazy but it works.
Road Warrior
Joined: Sep 2006
Posts: 1,605
Likes: 82
From: nj
Well put twizted biker, different metals heat up at warm up different temps. When I bought my 98 Superglide in Oct of 97 synthetic was not approved for the evo due to leaking problem of gaskets there are artiles in old bke magazines on this now as the years go buy gaskets have been inproved as for sealing, that is why if you original gaskets and they don't leak well you are doing something right I have almost 50,000 miles on my evo with no leaks again mine is a 98
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
I agree. My 99 EVO has 33,000 on it without a leak anywhere. I do warm it up, and I do use Castrol GTX 20-50 oil. I did one oil change with Mobil 1 V-Twin 20-50 oil at about 19,000, and it started weeping at the base gaskets. I changed back to Castrol and haven't had a seep since.
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Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Well put twizted biker, different metals heat up at warm up different temps. When I bought my 98 Superglide in Oct of 97 synthetic was not approved for the evo due to leaking problem of gaskets there are artiles in old bke magazines on this now as the years go buy gaskets have been inproved as for sealing, that is why if you original gaskets and they don't leak well you are doing something right I have almost 50,000 miles on my evo with no leaks again mine is a 98
My 98 has done 73,000 miles and I never warm it up....no leaks
Club Member
Joined: Mar 2009
Posts: 66,125
Likes: 51,441
From: Niles Canyon Ca.
Happens for some , but it's not the rule for all and yours is a later model they had done the heavier cylinder bolts from the factory by then with the newer composite wafer gaskets . Your bike came from the factory with all the stuff we had to fix regular on the earlier models .
Sucks they got it right for about 3 yrs and dropped the motor in favor of the twinkies .