Synthetic fortified?

[Monty69]

I recently bought a '05 sv650s, went to suzuki and asked for filter and oil for it, after looking over the selection, the salesman came back to me with elf eco "synthetic fortified" 10w/40. After putting it in, the engine seems a little noisier than before.... Ive checked the owners manual and it says 10w/40 is correct but theres no mention of mineral, synthetic fortified or full synthetic, so im just wondering if this elf eco is suitable (as my bike does get ridden hard on the weekends) or should i specificly ask for full synthetic? Id ring and ask the dealer but may get the same salesman who didnt seem to sure.....

[Warr]

Synthetic fortified ...... Rule of thumb I have heard.....
Engines with some k's don't change to Synthetic.
Reason .. The detergents in the oil with wash every bit of sludge away from around the oil seals resulting in leaking.

But lets see what the experts say

[Monty69]

sounds logical... But id rather the sludge wasnt there in the first place, the bike is '06 ive just discovered, and has done 24,000km. Being a late model sportsbike id assume you would run full synthetic oil... maybe im wrong

[AllanB]

Oil seals will be fine - it was absolutely years back when there was a small issue with them and the oil seals have all been made to work with full synths for yonks.

Your bike will be fine with either, mineral, semi synthetic or full synthetic 10w40. Stick to a bike specific oil (not car oil) but many may debate this .....

Kms on your bike are nothing to worry about - they are low.

Some bikes are 'fussy' with oils - my transmission shifting is fussy on the oil I run, even brand of oil!

There is little doubt that full synthetic oil is the best you can put in your engine. You decide if it is worth the extra cost.

[Monty69]

Your bike will be fine with either, mineral, semi synthetic or full synthetic 10w40. Stick to a bike specific oil (not car oil) but many may debate this .....

Theres nothing to debate, car oils have friction modifiers in them which can cause clutch slip on bikes. Not to say that this WILL happen, i put anything i can find in my 3 wheeler, even old car oil and the clutch doesnt slip