Question: Will Thicker Oil Help Piston Slap?

What is 20w50 oil used for?

A 20W-50 motor oil is typically used in older vehicles or in particularly warm climates.

Castrol GTX 20W-50 has been specially formulated to help extend the life of your engine by keeping it free from sludge, even when operating in extremely high temperatures..

Does piston slap burn oil?

While the piston slap is annoying, it does often not cause much damage to the car, and you can continue driving your car for miles if it’s not too worn or burns too much oil. … If this is the case, you will need to get a new and re-bored piston.

How long will an engine last with piston slap?

As other posters have state, some engines will run over 100,000 miles with that condition, and others will self destruct in 30,000-40,000 miles.

Should I use thicker oil in a high mileage engine?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well.

Does piston slap go away when warm?

Like most in it’s engine family, the 5.3 liter in my ’03 Suburban has some light piston slap when it’s cold. Pennzoil Ultra 5w-30 minimizes the slap and it goes away when warm. Try some Ultra if you can find it.

What helps piston slap?

Piston slap can only be fixed with an engine rebuild. The piston is rocking in the bore due to excessive clearance. Spark knock is preignition , that means that the combustion in the cylinder is happening before the piston is at the top of it’s travel and therefore “rattling” or knocking.

Will piston slap ruin my engine?

It is important to note that piston slap is very annoying because it causes loud noises, but it won’t initially cause too much damage to your car if you get it fixed right away. The good news is if the pistons are too worn down you can drive your car for a few miles as long as you don’t notice burning oil.

Will thicker oil stop oil burning?

A lot of oil-burning takes place because an engine’s piston rings are worn out, and thicker oil won’t fix that. … They also count on low-viscosity oils to reduce friction and drag (the work of simply moving the engine parts through thicker oil), which improves mileage.

What does a piston slap sound like?

A hollow, muffled, almost bell-like sound is usually piston slap. This condition is caused by a piston rocking back and forth within its cylinder. Continuous piston slap means the engine needs service; however, if you only notice this sound when the engine is cold, it is likely not serious.

What is the most common cause of piston slap?

“Piston slap is generally caused when the cold running clearance (piston-to-wall clearance) is large enough that when the piston rocks from side to side in the bore it “slaps” the side of the cylinder and causes noise,” explains JE Pistons’ Clayton Stothers.

Can I drive on a knocking engine?

The point is that yes, indeed, you can drive a car with a knocking engine and the oil light on. … Driving gently might get you a few more miles, maybe enough to get home or at least to an off ramp if you are on a freeway. On rare occasions in old cars, an engine may have a mild knock and still run hundreds of miles.

How do you fix high oil consumption?

New valve guide seals can drastically reduce oil consumption. I have seen older high mileage engines go from using a quart of oil every 500 miles to using no oil between oil changes (3000 miles) by simply replacing the valve guide seals!

Will thicker oil increase compression?

STP Oil Treatment Compression is increased in STP cars because the thicker layer both reduces metal-to-metal friction, and provides a better seal between the piston rings and the cylinder wall.