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Will non synthetic oil damage a engine that needs fully synthetic oil?
Wiki User
∙ 13y ago
Yes, although don't expect damage to be immediate. Petroleum oil is refined and synthetic oil is engineered. The difference being the molecular structure is unstable and varies in petroleum oils. Synthetic oil has a more stable molecular structure that is less susceptible to shear stresses. I use Amsoil in particular, because it outperforms all other synthetics, but ANY synthetic is better than conventional. If your mfr requires synthetic, for sure do not compromise!
Wiki User
∙ 13y ago
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What needs to be fixed on the timing belt goes out in a 2002 Chrysler 300 m?
As this is an interference engine you will have internal engine damage if the belt breaks. The amount of damage can only be determined after removing the head.
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Mixing syntheic blend with synthetic?
The question is somewhat unclear, but if you're asking if it's okay to mix synthetic-blend motor oil with full-synthetic motor oil, then the answer is yes. However, it somewhat defeats the purpose of paying extra for full-synthetic oil. Full-synthetic oils lubricate better than conventional and blended oils, and are more resistant to breakdown. This doesn't mean you should go longer between oil changes, though. No matter how good the oil lubricates, it still gets contaminated with particles from the combustion process and needs to be changed. The advantage is that over a long period of time, full-synthetic oil's better lubrication will protect the interior of the engine from heat and friction better than conventional or even synthetic-blend oils. With all conditions being equal, the engine treated with full-synthetic oil will retain its original performance and efficiency longer than the same engine treated with the alternatives. How much? That's a WHOLE different question! Synthetic-blend oils take advantage of the superior lubricating properties of full-synthetic, but at a lower cost by blending full-synthetic oil with conventional oil. It is a slight improvement, but generally won't make a considerable difference in the life of your engine if you maintain it properly and change your oil regularly. Again, contaminants are the biggest culprits in engine deterioration, not cheap oil (usually, there are exceptions). Mixing synthetic-blend oil with full-synthetic won't hurt anything at all except for slightly downgrading the superior lubrication properties of the full-synthetic oil. Mixing in conventional oil is also acceptable, effectively producing a synthetic-blend oil. Just be sure to use the proper oil type as called for in the owner's manual.
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There could be several reasons a car will crank but not start the engine. One reason for this issue could be the spark plugs are not firing. The car may needs a tune up. A mechanic can fully diagnose the issue concerning the engine not starting.
