Originally Posted By: Russell
Originally Posted By: supercity
Here you go, case closed!
Nulon for old worn engines
Wow! 40w70 is one thick oil.
I've never even heard of oil that thick.
Originally Posted By: riggaz
Originally Posted By: Russell
Is there a best weight oil to reduce leaks? For example will a 20w50 reduce oil leaks better than a 5w40? I know teere are many more variables such as synthetic or HM oils and possiblely climate. Just wondering and a bit curious.
Funny you should say that.
A Harley forum I'm in,the older Evo engines seem to leak or weep when using synthetic,but conventional seems to curb the issue.
I used to think synthetic was the be all to end all as far as oil goes but thanks to dnewton,and the info I've learned in this forum oil is application dependent.
Oil for a twin turbo is going to be different then for an 1980's 305.
I was using Mobil 1 15w-50 (PAO) in my fathers car and had front and rear crank oil seal leakage which was causing clutch judder after a long run but i switched back to a semi synthetic 10w-40 with a high mineral oil content and the leaks and clutch judder have stopped, it also revs free er now.
Originally Posted By: Russell
Originally Posted By: Clevy
Originally Posted By: Russell
Originally Posted By: Clevy
Going up a grade may slow consumption through the valve guide and worn rings. If it's a gasket that's leaking then there are products you can add to oil that may help swell the gasket if it's cork.
Any product recomendations?
Napa carries a brand called liqui-moly. They have a product called engine oil saver. It may help. It claims to help stop leaks from dried out gaskets. I've found the companies products to work well and do what they claim they will do.
Or you can try a high mileage oil. Valvoline gets alot of fanfare however I like sopus products. I've read threads where the poster claimed small leaks were cured using all the high mileage oils,and I've read threads where they haven't helped at all.
The liqui-moly motor oil saver is inexpensive and the can of product is small
enough that I can't see it affecting the viscosity or diluting the additive package of the oil in the sump.
If the seal that is leaking used rtv to seal it then nothing will help.
Good luck. Post back if you find something that worked.
Great list. I will try at least the motor saver product. This company makes good products.
Yeah. Liqui-moly hasn't been around in north America for long but everything I've ever used that they produce has lived up to it's claims,so I keep using them.
They make a product called cera-tec which I used for the first time in my high mile hemi. I like it. It's hard to find in Canada,I had to order it from eBay from an American supplier,then there is MOS2 that I absolutely love. Every engine that I put MOS2 into became more fuel efficient. From my vehicles to my 160cc Honda compressor motors,and everything in between. In -30 winter weather my pull start compressors are much easier to pull over and get started with MOS2 in the sump.
Check out the cera-tec and MOS2. I've only found their products at napa auto parts here in Canada and I don't know if anyone else carries their line.
Keep us updated on your progress please. I'm anxious to know if your leak was helped,and the anecdotal evidenceay help another member with the same issue.